31 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:18
  FFMPEG demuxer seek error in Chrome range slider with AWS audio file - Tania Rascia Newest 'ffmpeg' Questions - Stack Overflow
  I'm encountering an issue where if you click or slide enough on a range slider in Chrome, it will eventually stop working and give this error, an error 2 (network error): PIPELINE_ERROR_READ: FFmpegDemuxer: demuxer seek failed If I google this error, I only find the Chrome source code: Line 1749 of Chrome source code First, this issue only happens in Chrome, not Firefox. Second, I can only get it to happen with an encrypted file from AWS, which I can't get into a sandbox, so the sandbox I made will never encounter that error with the random audio file I (...) -- Line 1749 of Chrome source code, Here's the sandbox.
• 15:04
  How to fix av_interleaved_write_frame() broken pipe error in php - Adekunle Adeyeye Newest 'ffmpeg' Questions - Stack Overflow
  I have an issue using ffmpeg to stream audio and parse to google cloud speech to text in PHP. It returns this output. I have tried delaying some part of the script, that did not solve it. I have also checked for similar questions. however, they are mostly in python and none of the solutions actually work for this. built with gcc 8 (GCC) cpudetect libavutil 56. 31.100 / 56. 31.100 libavcodec 58. 54.100 / 58. 54.100 libavformat 58. 29.100 / 58. 29.100 libavdevice 58. 8.100 / 58. 8.100 libavfilter 7. 57.100 / 7. 57.100 libavresample 4. 0. (...) --
• 14:15
  RTSP Frame Grabbing creates smeared , pixeled and corrupted images - Robob Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to capture a single frame per second from a RTSP stream with following command ffmpeg -i rtsp://XXX -q:v 1 -vf fps=fps=1 -strftime 1 ZZZZ\\%H_%M_%S.jpg But some of the frames are smeared ,pixeled and corrupted - this effect is drastically increases if rtsp resolution is increased (if the resolution is decreased for example to 720P most of the frames are OK) I have to say that playing same rtsp stream in VLC or FFPLAY is flowless. How I can fix it to grab better quality Thanks in (...) -- ,
• 12:41
  I have a problem with my input resampling FFmpeg audio code [closed] - Jaime Samper Newest 'ffmpeg' Questions - Stack Overflow
  I,ve tried to do a resampling with ffmpeg, but i found issues all the time in my code. firt, i tried to get the imput channel layout but av_channel_layout_default(&layout, audio_codecpar->nb_channels) tells me, "there´s not nb_channels menber. so i put the resampling code manually cause I know is stereo. av_opt_set_sample_fmt(swr_ctx, "in_sample_fmt", codec_ctx->sample_fmt, 0); av_opt_set_int(swr_ctx, "in_channel_layout", AV_CH_LAYOUT_STEREO, 0); av_opt_set_int(swr_ctx, "in_sample_rate", codec_ctx->sample_rate, 0); av_opt_set_sample_fmt(swr_ctx, (...)
• 10:35
  FFmpeg Non-monotonous DTS in output stream - Tim Autin Newest 'ffmpeg' Questions - Stack Overflow
  I need to record a h265 4K RTSP stream into 1/2h segments. I'm using this command: ffmpeg \\ -i "rtsp://..." \\ -vcodec copy \\ -segment_list /path/to/segments_2025-03-31_09-18-45.153_1.txt \\ -f segment -reset_timestamps 1 -segment_time 1800 -strftime 1 \\ "/path/to/segment_%y%m%d%H%M%S.mp4" It works but: the recorded files show some artifact these warnings are print in the console when starting recording: [segment ⓐ 0x6171d02eeac0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the (...)
• 07:15
  How to automatically rotate video based on camera orientation while recording? - jestrabikr Newest 'ffmpeg' Questions - Stack Overflow
  I am developing Mediasoup SFU and client web app, on the server I am recording client's stream by sending it to FFmpeg as plain RTP. FFmpeg creates HLS recording (.m3u8 and .ts files), because I need to be able to switch between WebRTC live stream and HLS recording before live stream ends. My problem is that, when I am testing the app and I rotate my phone 90 degrees, the recording's aspect ratio stays the same but the image is rotated (as shown on images 1.1, 1.2 and 1.3 below). I need for it to change aspect ratio dynamically according to camera orientation. How can I do (...) -- , , , ,

30 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:50
  Restream with FFmpeg [closed] - boyuna1720 Newest 'ffmpeg' Questions - Stack Overflow
  I have iptv playlist file with inside VODs and Channel links. I want to restream it from my server becouse provider allows only one user to watch. When i am using Nginx with RTMP and FFmpeG i am getting this error. please tell me if anyone can help to fix this issue. ffmpeg -re -i "http://excel90095.cdn-akm.me:80/23a9a158d8d8/2dd736a985/325973" -c:v copy -c:a aac -f flv "rtmp://localhost/live/test" --
• 21:08
  I Need Help Making Our Driver Station Video Feed Faster [closed] - Joshua Green Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using FFmpeg on a Raspberry Pi 4 Model B using an ArduCam UC-844 Rev. B as the camera. We do not need any audio and I don't care about the quality of the video. All we need is for the stream to be as fast as possible. The video from the camera is being streamed to the driver station via FFmpeg and being picked up on the driver station via FFplay. Right now we are getting a delay that we wish could go away or be significantly shortened. These are the commands we are using. Raspberry Pi: ffmpeg -i /dev/video0 -c:v libx264 -crf 45 -maxrate 1M -bufsize 1.2M (...)
• 18:34
  I Need Help Making Our FIRST Robotics Competition Driver Station Video Feed Faster [closed] - Joshua Green Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using FFmpeg on a Raspberry Pi 4 Model B using an ArduCam UC-844 Rev. B as the camera. We do not need any audio and I don't care about the quality of the video. All we need is for the stream to be as fast as possible. The video from the camera is being streamed to the driver station via FFmpeg and being picked up on the driver station via FFplay. Right now we are getting a delay that we wish could go away or be significantly shortened. These are the commands we are using. Raspberry Pi: ffmpeg -i /dev/video0 -c:v libx264 -crf 45 -maxrate 1M -bufsize 1.2M (...)
• 13:12
  ffmpeg produces video I cannot load on latest Safari on iOS - Michael Heuberger Newest 'ffmpeg' Questions - Stack Overflow
  When I encode two videos (mp4 and webm) with these ffmpeg parameters (based on images), I cannot play the mp4 it produces on latest Safari (inside a tag) inside my iPhone 6s using the latest iOS too: ffmpeg -framerate 15.2 -f image2 -thread_queue_size 64 -i /home/michael-heuberger/abcd/frames/%d.webp -y -an -vcodec libx264 -vf scale=trunc(iw/2)*2:trunc(ih/2)*2 -crf 16 -preset fast -profile:v baseline -pix_fmt yuv420p -movflags +faststart /home/michael-heuberger/abcd/videomail_good.mp4 -vcodec libvpx (...) -- www.videomail.io
• 07:57
  Create a video from JPG without have all pictures at begining with ffmpeg - Chklang Newest 'ffmpeg' Questions - Stack Overflow
  I have a game which can create some screenshots, and I want to transform them to mp4 video. So I've the next command: ffmpeg -framerate 15 -i %06d.png -s hd1080 -vcodec libx264 -r 30 timelapse.mp4 But my game lasts 8h, so, after have auto-compress pictures, I've more than 9To of pictures. So I want to start the ffmpeg process before the end of pictures generation, so I want that ffmpeg wait the next picture to digest it. How can I do (...)

29 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:29
  FFMEG option scale=-1 and scale=-2 - smal Newest 'ffmpeg' Questions - Stack Overflow
  I tried to convert a video and resize it with scale=-1:720, but got the error "width not divisible by 2". And I solved it with: scale=-2:720. What are the differences between scale=-1:720 and scale=-2:720
• 07:47
  How to get webam frames one by one but also compressed? - Vorac Newest 'ffmpeg' Questions - Stack Overflow
  I need to grab frames from the webcam of a laptop, transmit them one by one and the receiving side stitch them into a video. I picked ffmpeg-python as wrapper of choice and the example from the docs works right away: #!/usr/bin/env python # In this file: reading frames one by one from the webcam. import ffmpeg width = 640 height = 480 reader = ( ffmpeg .input('/dev/video0', s='x'.format(width, height)) .output('pipe:', format='rawvideo', pix_fmt='yuv420p')  (...) -- example, the docs

28 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 05:10
  Incorrect length of video produced with ffmpeg libraries [closed] - ivan.ukr Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a C program that takes series of PNG images and converts them into a video. Video consists of the initial black screen and then each of those images, shown for the same constant amount of time, say 200 ms. I'm using libx264 as codec and mp4 as output format. I'm compiling my program with GCC 12 on Ubuntu 22.04 LTS. I'm using ffmpeg version from Ubuntu repositories. In order to achieve above behavior I've set time base to 1/5 in the both stream and codec. // assume imageDuration = 200 AVRational timeBase; av_reduce(&timeBase.num, (...)
• 13:27
  convert a heif file to png/jpg using ffmpeg - Ajitesh Singh Newest 'ffmpeg' Questions - Stack Overflow
  The use case is very straight forward. Imagemagick is able to do the conversion but I want to do it with ffmpeg. Here is the all commands I have tried and all of them gives moov atom not found error. ffmpeg -i /Users/ajitesh/Downloads/sample1.heif -c:v png -pix_fmt rgb48 /Users/ajitesh/Downloads/sample.png Output [mov,mp4,m4a,3gp,3g2,mj2 ⓐ 0x7f85aa813200] moov atom not found /Users/ajitesh/Downloads/sample1.heif: Invalid data found when processing input it seems like moov atom is actually not present by trying to extract the location of moov atom using the (...)
• 01:16
  Empty audio backends for torchaudio list audio backends, with ffmpeg installed on system libraries [closed] - Alberto Agudo Dominguez Newest 'ffmpeg' Questions - Stack Overflow
  I installed torchaudio 2.5.1 and a system install of ffmpeg on Windows and get: PS C:\\Users\\> ffmpeg -version ffmpeg version 2025-01-05-git-19c95ecbff-essentials_build-www.gyan.dev Copyright (c) 2000-2025 the FFmpeg developers built with gcc 14.2.0 (Rev1, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth (...)
• 09:06
  Including FFmpeg.framework Into My IOS App - Alpi Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to manually integrate ffmpegkit.framework into my Expo Bare Workflow iOS app (built with React Native + native modules via Xcode) because the ffmpegkit will be deprecated and the binaries will be deleted. So far I've downloaded the latest LTS release of FFmpegkit from here. I've created 3 files: FFmpegModule.m , FFmpegModule.swift and SoundBud-Bridging-Header. Added the frameworks to my projectDir/ios manually, which shows in my XCode under projectDir/Frameworks Added all the frameworks into "Frameworks, Libraries and Embedded (...) -- here
• 05:15
  How to add info to a video and share it with others in React Native - Sanjay Kalal Newest 'ffmpeg' Questions - Stack Overflow
  I am looking for a solution in which I can pick a video from the gallery and add info or overlay inside it and then share the video with the added info in react native. I tried using ffmpeg but it is not working properly I need a proper solution in which I can peak the video, add info to it and share it. I tried ffmpeg but it is not working.
• 05:04
  How to write H264 raw stream into mp4 using ffmpeg directly - Yelsin Newest 'ffmpeg' Questions - Stack Overflow
  I want to wrap the H264 Nalus(x264 encoded) into mp4 using ffmpeg(SDK 2.1), but the output mp4 file could not play. I don't know how to set the pts and dts. Here's my code, using the code from Raw H264 frames in mpegts container using libavcodec and muxing.c from www.ffmpeg.org. My H264 stream has no B-Frame, every nalu starts with 00 00 00 01,the stream begins with sps pps then the h264 data. #include "stdafx.h" #include #include #include "Stream2Mp4.h" #include #include #include #include #include #include (...)

27 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:30
  How to initialize video decoder with a already decoded frame? - Ragdoll Car Newest 'ffmpeg' Questions - Stack Overflow
  Let's say I have an FFmpeg video decoder x264 initially initialized with some parameters. I am using C++ in my scenario. In normal conditions we push an encoded I-frame into such decoder and then referencing encoded P-frames. I have a special case where my I-frame is already decoded. So in my case I want to: push already decoded I-frame into my decoder push referencing encoded P-frames into my decoder How can I initialize the decoder state with already decoded I-frame? Currently to bypass these limitations I have to: create a new (...)
• 22:01
  Audio delay after resuming FFmpeg on Windows - Iman Sajadpur Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a screen recording software for Windows using Python. I use FFmpeg for recording and psutil to pause and resume the process. Here is a sample of my code: import psutil import subprocess process = subprocess.Popen([ 'ffmpeg', '-y', '-rtbufsize', '100M', '-f', 'gdigrab', '-thread_queue_size', '1024', '-probesize', '50M', '-r', '24', '-draw_mouse', '1',  (...)
• 17:52
  using FFMPEG with silencedetect to remove audio silence - Zahlii Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use the following command with the latest ffmpeg build to remove silence from my .mp3 files: ffmpeg -i SILENCE.mp3 -af silencedetect=n=-50dB:d=1 -y -ab 192k SILENCE_OUT.mp3 However, the following output is produced: ffmpeg version N-66154-g1654ca7 Copyright (c) 2000-2014 the FFmpeg developers built on Sep 5 2014 22:10:38 with gcc 4.8.3 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass (...)
• 17:29
  How can I remove silence from an MP3 programmatically? - Benjamin Oakes Newest 'ffmpeg' Questions - Stack Overflow
  I have MP3 files that sometimes have silence at the end. I would like to remove this silence automatically. From what I can tell, it is "perfect" silence (0 amplitude), not background noise. The length of the content and the silence varies. I found some other questions about cropping to the first 30 seconds or cropping to X and X+N seconds using ffmpeg. I would think I could use a similar approach, as long as I have a way to find when the silence starts. How would I do that programatically? For example, one possible solution would be to have a command that finds (...)
• 12:10
  Rewrite video with ffmpeg with given non-equidistant times for each frame - Aleph0 Newest 'ffmpeg' Questions - Stack Overflow
  In one of my projects it is necessary to synchronize a video with a different datasource. I already have the video as a mts file. I also exactly know which frame will be displayed at which time. This times are not necessarily equidistant. For simplicity assume that my video consists just out of 5 frames: Frame No Time 1 1s 2 3s 3 5s 4 8s 5 12s What kind of ffmpeg command using a list of times give by a simple text file can be used to (...)
• 10:28
  How can I display an image from Uint8List with the format AVFormat.RGBA8888 more quickly in Flutter? - Salawesh Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking to display images as quickly as possible. input data is in the form of Uint8List from dart:typed_data, data is encoded in AVFormat.RGBA8888 from ffmpeg. I'm looking for a solution to improve the performance of my graphics rendering code. And to see if it's possible to do it in a thread (isolate or compute). Here's my current working code. final buffer = await ui.ImmutableBuffer.fromUint8List(data.data); final descriptor = ui.ImageDescriptor.raw( buffer, width: data.width, height: data.height, pixelFormat: (...)
• 09:12
  How to manage hls in Nginx RTMP module - syrkandonut Newest 'ffmpeg' Questions - Stack Overflow
  I would like to manage the hls broadcast on request, like stop/start or some other way in Nginx RMTP module. My rtmp server needs to support many cameras, however, when it does ffmpeg exec for 200-300 rtmp streams, this is very difficult for the processor, so I would like to execute the ffmpeg command in parallel only on request, how could this be done? Rtmp Server rtmp server listen 1935; chunk_size 8192; application live live on; record off; drop_idle_publisher 10s; allow publish all; on_publish (...)
• 03:40
  VLC dead input for RTP stream - CaptainCheese Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on creating an rtp stream that's meant to display live waveform data from Pioneer prolink players. The motivation for sending this video out is to be able to receive it in a flutter frontend. I initially was just sending a base-24 encoding of the raw ARGB packed ints per frame across a Kafka topic to it but processing this data in flutter proved to be untenable and was bogging down the main UI thread. Not sure if this is the most optimal way of going about this but just trying to get anything to work if it means some speedup on the frontend. So the issue the (...)

26 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:12
  Can ffmpeg extract closed caption data [closed] - spinon Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using ffmpeg to convert videos in various formats to flv files. One request has also come up and that is to get closed caption info out o the file as well. Does anyone have any experience with this or know it can even be done. I don't see any options for it but thought I would ask and see.
• 04:29
  Using FFmpeg with URL input causes SIGSEGV in AWS Lambda (Python runtime) - Dave94 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to implement a video converting solution on AWS Lambda following their article named Processing user-generated content using AWS Lambda and FFmpeg. However when I run my command with subprocess.Popen() it returns -11 which translates to SIGSEGV (segmentation fault). I've tried to process the video with the newest (4.3.1) static build from John Van Sickle's site as with the "official" ffmpeg-lambda-layer but it seems like it doesn't matter which one I use, the result is the same. If I download the video to the Lambda's /tmp directory and add (...) -- Processing user-generated content using AWS Lambda and FFmpeg, John Van Sickle, ffmpeg-lambda-layer
• 04:08
  How is better to use ffmpeg with the ASP.NET Core, on Linux? - user8245660 Newest 'ffmpeg' Questions - Stack Overflow
  I've got the project (ASP.NET Core, on Linux) where are the several tasks, which relate to the video converting and extracting frames from the video file. I thought about the two possible options: using ffmpeg console utility using P/Invoke with the libavcodec library and others, which ffmpeg uses The second option is miles harder and may be very impractical, because it reminds me developing the new wrapper/library, instead of using the ready products. I've done googling, but there aren't well-done projects for the (...)

25 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:21
  Remove audio tracks with FFmpeg [closed] - David Hildreth Newest 'ffmpeg' Questions - Stack Overflow
  I have some ProRes MOV files that have good audio on the first two tracks and then tone on the last 14. I'd love to remove the last 14 tracks, but I can't seem to do it. I've been trying variations on ffmpeg -i input_video.mov -map 0 -map -0:a:2 -map -0:a:3 -c copy output_video.mov but when I drag the resulting file into Premiere, the last 14 tracks are still included. How do I ditch those audio tracks?
• 16:09
  Broken Pipe Error On Moviepy When Receiving a SIGINT OR SIGTERM - Pablo Estrada Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to write a video with moviepy on a temp dir. Here's a sample code: video_file_name = '/'.format(tempfile.mkdtemp(), 'somefile.mp4') clip.write_videofile(video_file_name, audio = False, threads =4,logger = None) This works perfectly fine. However In my app context I want to be able to catch SIGTERM or SIGINT signals and wait until this write finishes before actually killing the app. I do it this way: signal.signal(signal.SIGINT, self.exit_gracefully) signal.signal(signal.SIGTERM, self.exit_gracefully) def (...)
• 13:35
  How to grab a single image from RTSP stream using FFMPEG - sealfab Newest 'ffmpeg' Questions - Stack Overflow
  I have seen several other related questions but they all seem to be related to grabbing a still shot every X number of seconds. How can I grab 1 image when the command is run. I was trying ffmpeg -y -i rtsp://admin:adminⓐ192.168.10.113:554/live -f image2 -updatefirst 1 do.jpg
• 09:56
  Issue with Subtitles Not Embedding in Exported Video Using FFmpeg - Yash Chauhan Newest 'ffmpeg' Questions - Stack Overflow
  I've been encountering an issue while attempting to embed subtitles into a video using FFmpeg. Despite following the process outlined below, the exported video does not include the subtitles: export async function embedSubtitles(ffmpeg: FFmpeg, videoFile: File, srtContent: string) await ffmpeg.writeFile('input.mp4', await fetchFile(videoFile)); await ffmpeg.writeFile('./subtitles.srt', srtContent); const ffmpeg_cmd = [ '-i', 'input.mp4', '-vf',  (...)

24 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 04:38
  FFmpeg, low quality merge using overlay filter [closed] - He2A Newest 'ffmpeg' Questions - Stack Overflow
  I am currently building a script, part of its functionality is to generate a cover art. I want to limit the scripts dependency to ffmpeg only so please don't suggest to use any other software to do the same. For this, I am using ffmpeg to generate separate components for the coverart, code is given below: # Draws transparent circle in correct background ffmpeg -y -f lavfi -i "color=c=0x20292FFF:s=4000x4000,format=rgba" -filter_complex "geq=r='32':g='41':b='47':a='255*(1-between(hypot(X-2000,Y-2000),0,1150))'" -frames:v 1 -update 1 (...)
• 23:44
  FFMPEG SRT multiple callers in to one listener? - Ian Newest 'ffmpeg' Questions - Stack Overflow
  I am using this line: exec_push /home/production/bin/ffmpeg -i rtmp://localhost:1935/live/slot4 -codec copy -g 1 -bsf:v h264_mp4toannexb -f mpegts srt://0.0.0.0:50330?mode=listener -loglevel verbose; in nginx to launch FFMPEG and have it transmux RTMP to SRT. That being said, i'm curious if there is a flag or a way to have multiple SRT callers call into this one stream. If not, can you provide and alternative solution?
• 23:17
  encoding a video to AV1 for compression - living being Newest 'ffmpeg' Questions - Stack Overflow
  I wrote a code to encode a 1080p video to AV1 codec to reduce the file size. At the same time, I encoded the same video to x265. As they say, AV1 should reduce the size around 40-50% more than x265. But I didn't achieve it. The original file size: 74 MB the file encoded with AV1: 53 MB The file encoded with x265: 34 MB My AV1 code: ffmpeg -i "input.webm" -vcodec libsvtav1 -preset 4 -crf 38 -acodec libopus -ac 1 -b:a 24K "output.mkv"; My x265 code: ffmpeg -i "input.webm" -vcodec libx265 -preset fast -crf 31 -acodec libopus -ac 1 -b:a 24K (...)
• 21:35
  How to Pause and Resume Screen Recording in FFmpeg on Windows? - Iman Sajadpur Newest 'ffmpeg' Questions - Stack Overflow
  I use FFmpeg on Windows to record my screen. I want to pause and resume the recording properly. I know that pressing Ctrl + S, Pause key on the Keyboard, or suspending FFmpeg via Resource Monitor stops the process, but screen recording conntinues in the background. Here is an example of the command I use for screen recording: ffmpeg -f gdigrab -probesize 100M -i desktop -f dshow -channel_layout stereo -i audio="Microphone (2- High Definition Audio Device)" output.mp4 How can I pause recording completely so that no frames are captured during the pause and resume it (...)
• 20:57
  Assigning of dts values to encoded packets - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I have a dump of H264-encoded data, which I need to put in mp4 container. I verified the validity of the encoded data by using mp4box utility against it. The mp4 file created by mp4box contained a proper 17 seconds long video. It is interesting that if I try ffmpeg to achieve the same, the resulting video is 34 seconds long and rather crappy (probably ffmpeg tries to decode video and then encode it, which results in the loss of video quality?) Anyway, for my project I can't use command line approach and need to come up wit a programmatic way to embed the data in the mp4 (...)
• 20:57
  FFmpeg - What does non monotonically increasing dts mean? - Mukund Manikarnike Newest 'ffmpeg' Questions - Stack Overflow
  Observations - Part - I I saw a suggestion elsewhere to run the following command to see if there's something wrong with my .mp4. ffmpeg -v error -i ~/Desktop/5_minute_sync_output_15mn.mp4 -f null - 2>error.log When I run the above command, I see a whole bunch of the logs on the lines of what's shown below. Application provided invalid, non monotonically increasing dts to muxer in stream 0: 15635 >= 15635 This, from searching and reading up quite a bit, I understand that the decoding timestamp isn't in (...)
• 20:55
  ffmpeg remove Non-Monotonous DTS frames - MiGu3X Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to stream copy a .ts file to another .ts file by removing the Non-Monotonous DTS frames? These frames usually also have a smaller resolution than the video I am trying to copy. I attempted this with VideoReDo but it did not work and I cannot seem to make it work. Also, the MediaInfo for the video after remixed to Matrosks shows this: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : HighⓐL3.2 Format settings : CABAC / 2 Ref Frames Format settings, CABAC : Yes Format settings, RefFrames : 2 (...)
• 20:52
  How to set pts, dts and duration in ffmpeg library? - hslee Newest 'ffmpeg' Questions - Stack Overflow
  I want to pack some compressed video packets(h.264) to ".mp4" container. One word, Muxing, no decoding and no encoding. And I have no idea how to set pts, dts and duration. I get the packets with "pcap" library. I removed headers before compressed video data show up. e.g. Ethernet, VLAN. I collected data until one frame and decoded it for getting information of data. e.g. width, height. (I am not sure that it is necessary) I initialized output context, stream and codec context. I started to receive packets with "pcap" library again. (now for (...)
• 20:51
  Non-monotonous DTS after 26:30:02.81 recording time - micha Newest 'ffmpeg' Questions - Stack Overflow
  I record an hls stream and after 26:30:02.81 there come the message: [http ⓐ 0x558330f5ba80] Opening 'http://de-origin-live-be-01.3qsdn.com:8081/3279/996191_PwxkbnqRThCDGXVr/l_94_95438333_16449.ts?nimblesessionid=2106' for reading frame=2289669 fps= 24 q=-1.0 size=25056768kB time=26:30:02.81 bitrate=2151.6kbits/s speed= 1x [mpegts ⓐ 0x558330f07280] Invalid timestamps stream=0, pts=10378, dts=8589926250, size=11200 [mpegts ⓐ 0x558330f07280] Invalid timestamps stream=0, pts=2908, dts=8589929940, size=3407 [mp4 ⓐ 0x558330f20bc0] Non-monotonous DTS in (...)
• 20:50
  Bash script to recursive find and convert movies - Jacco Newest 'ffmpeg' Questions - Stack Overflow
  in my large movie collection I would like to search for movies with the primary (first) audio track with DTS coding to be converted to Dolby. My problem would be the first track I think. My current bash script will list any movie containing a DTS track, but does not specify which track. #!/bin/bash # My message to create DTS list find /home/Movies -name '*.mkv' | while read f do if mediainfo "$f" | grep A_DTS; then echo $f fi done After that I would like to run this command ffmpeg -i $f -map 0:v -map 0:a:0 -map 0:a -map 0:s (...)
• 20:49
  Convert DTS to AC3 but only if there is no AC3 track already present in container - Domagoj Newest 'ffmpeg' Questions - Stack Overflow
  I have sound system that does not support DTS only AC3. I'm automating the process using bash that detects when movie was added to folder, downloads subtitles and converts audio track to AC3 using this command (one part of it): ffmpeg -i "episode" -map 0:v -map 0:a:0 -map 0:a -map 0:s -c:v copy -c:a copy -c:s copy -c:a:0 ac3 -b:a:0 640k "directory"/episode_nametemp2.mkv This works without issue and I end up with a .mkv file that contains original DTS audio track and newly created AC3 audio track. The issue is that some files already contain both AC3 and DTS tracks and in (...)
• 20:41
  Why is using ffmpeg to convert MXF files failing? - Marinaio Newest 'ffmpeg' Questions - Stack Overflow
  I have an MXF video I googled syntax to convert to mov and ran it in Mobaxterm on Win10. "/drives/c/Program Files (x86)/ffmpeg/bin/ffmpeg.exe" -i Clip0001.MXF -c:v libx264 -c:a aac -ab 384k -sn -strict -2 output.mov I view it in VideoLan and it looks great. I load it into Magix Movie Studio 15 and audio is fine, but video is green! ffmpeg output.mov....shows me: Stream #0:0(eng): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], 4530 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (...) --
• 14:44
  Convert audio files to mp3 using ffmpeg [closed] - Hrishikesh -Rishi- Choudhari Newest 'ffmpeg' Questions - Stack Overflow
  I need to convert audio files to mp3 using ffmpeg. When I write the command as ffmpeg -i audio.ogg -acodec mp3 newfile.mp3, I get the error: FFmpeg version 0.5.2, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 1 / 52.20. 1 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 built on Jun 24 2010 14:56:20, gcc: 4.4.1 Input #0, mp3, from 'ZHRE.mp3': Duration: 00:04:12.52, start: 0.000000, bitrate: 208 kb/s Stream #0.0: Audio: mp3, 44100 Hz, (...)
• 12:12
  FFmpeg.js in React/Vite: Worker.js 504 Error and Loading Stalls After load() - METHESWAR S R Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to implement video compression in a React application using ⓐffmpeg/ffmpeg with Vite, but I'm encountering issues with loading the FFmpeg core files. The loading process stalls after calling load(), and I'm getting a 504 error for the worker.js file. When initializing FFmpeg in my React component, the loading process hangs after calling ffmpeg.load(). In the network tab, I see a 504 Gateway Timeout error for worker.js?type=module&worker_file. const loadFFmpeg = async () => try setIsLoading(true); const ffmpegInstance = new (...)
• 07:09
  PHP-FFMPEG How can I display the progress? - Mondi Newest 'ffmpeg' Questions - Stack Overflow
  Formathttps://github.com/PHP-FFMpeg/PHP-FFMpeg?tab=readme-ov-file#formats The callback provided for the event can be any callable. I'm just learning and I don't understand how to make a callback. Is it possible to give an example, please? -- https://github.com/PHP-FFMpeg/PHP-FFMpeg?tab=readme-ov-file#formats

23 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:51
  FFmpeg, how to output AVIF image series instead of animated AVIF? [closed] - EntityinArray Newest 'ffmpeg' Questions - Stack Overflow
  I want to convert a series of huge PNGs into AVIF. ffmpeg -i 'img (%d).png' -c:v libsvtav1 -s 1280x720 .\\lidl\\img%d.avif FFmpeg always outputs an animated AVIF. How to force it to output AVIF image series?
• 17:54
  Requested MovieWriter (ffmpeg) not available even when I installed it - EXODIA Newest 'ffmpeg' Questions - Stack Overflow
  I am running this command. import bar_chart_race as bcr bcr.bar_chart_race(df=covid_df,filename=None,figsize=(3.5,3),title='Covid-19 Cases by State',n_bars=10) Getting the below error Exception: You do not have ffmpeg installed on your machine. Download ffmpeg from here: https://www.ffmpeg.org/download.html. Matplotlib's original error message below: Requested MovieWriter (ffmpeg) not available Have already installed the module D:\\py\\Scripts>pip install ffmpeg-python Requirement already satisfied: (...)
• 09:15
  FFmpeg, output AVIF image series instead of animated AVIF - EntityinArray Newest 'ffmpeg' Questions - Stack Overflow
  I want to convert a series of huge PNGs into AVIF. ffmpeg -i 'img (%d).png' -c:v libsvtav1 -s 1280x720 .\\lidl\\img%d.avif FFmpeg always outputs an animated AVIF. How to force it to output AVIF image series?

22 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:53
  Concat lots of audio files to a video with ffmpeg [closed] - Sulli Newest 'ffmpeg' Questions - Stack Overflow
  I’m using this ffmpeg command to add audio effects at certain times to a video file: ffmpeg -i C:\\path\\to\\video.mp4 -i C:\\path\\to\\audio1.wav -i C:\\path\\to\\audio2.wav -filter_complex "[1]adelay=0|0[a1]; [2]adelay=960|960[a2]; [a1][a2]amix=inputs=2[a]" -map 0:v:0 -map [a] -c:v copy -c:a aac -b:a 192k -loglevel error -y C:\\path\\to\\output.mp4 it works, but when I want to add LOTS of audio effects (like more than 200), I get errors like An unexpected error occurred: [WinError 206] The filename or extension is too long As it seems to be a command length problem, I (...)
• 13:38
  FFMPEG Failed to Connect to UDP Stream in Kubernetes Pod [closed] - Nimrod Newest 'ffmpeg' Questions - Stack Overflow
  I have a pod inside my kubernetes (openshift) cluster. The pod tries to connect to a remote UDP video livestream to read frames to be processed. I find that the first 2-4 attempts that the programs makes to connect to the stream fail (timeout) but after around 4 attempts the stream can be connected. It is even more strange to me because there are multiple stream IPs:ports. So there are times when connecting to a IP/Port fails a couple of times at the beginning but afterwards the program has no issue connecting to a various number of stream sources. My question is does anyone (...)
• 00:14
  Install ffmpeg in to virtual environment - ldg Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to install ffmpeg in order to use it on OpenAI to record videos. I have installed it using brew install ffmpeg but somehow when I compile my code I get the same error, it is like the package is not recognized by my virtualenv where I am working. Error on Python console: raise error.DependencyNotInstalled("""Found neither the ffmpeg nor avconv executables. On OS X, you can install ffmpeg via `brew install ffmpeg`. On most Ubuntu variants, `sudo apt-get install ffmpeg` should do it. On Ubuntu 14.04, however, you'll need to install avconv with `sudo (...)

21 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:12
  Unity webgl build Video recording and sharing error in android [closed] - Rithika gl Newest 'ffmpeg' Questions - Stack Overflow
  Unity webgl build Video recording and sharing error.I have been facing issues with the sharing & saving option in all web browsers , in unity webgl build in android but everything works on iOS and the desktop . Used ffmpeg but causes several errors , also used conversion techniques like mp4 format and webm as well.

20 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:14
  I am building an editor app in flutter, I want to use ffmpeg_kit_flutter_full_gpl package or something similar to build video editor - Almas Tai Newest 'ffmpeg' Questions - Stack Overflow
  Users/xyz/.pub-cache/hosted/pub.dev/ffmpeg_kit_flutter_full_gpl-6.0.3/android/src/main/java/com/arthenica/ffmpegkit/flutter/FFmpegKitFlutterPlugin.java:192: error: method onAttachedToEngine(FlutterPluginBinding) is already defined in class FFmpegKitFlutterPlugin public void onAttachedToEngine(ⓐNonNull final FlutterPluginBinding flutterPluginBinding) ^ /Users/xyz/.pub-cache/hosted/pub.dev/ffmpeg_kit_flutter_full_gpl-6.0.3/android/src/main/java/com/arthenica/ffmpegkit/flutter/FFmpegKitFlutterPlugin.java:657: error: cannot find symbol protected void init(final (...)
• 00:45
  Alexa developer console gives me "The audio is not of a supported MPEG version" Error - Boban BoBo Banjevic Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make an Alexa skill, and I am using audio mp3 files stored is S3, lambda function has access to my DynamoDb and ultimately S3. But I have an issue with my audio files. I keep on getting "The audio is not of a supported MPEG version" when I test alexa skill. I tried multiple ffmpeg -i file conversions. When I type ffprobe -v quiet -print_format json -show_format -show_streams "Piano.mf.A1.audio10.mp3" this is what i have for my file down below: Input #0, mp3, from 'Piano.mf.A1.audio10.mp3': Metadata: encoder : Lavf61.9.107 Duration: (...)

19 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:53
  laptop screen recorder built using python & ffmpeg can generate only video file in AVI format succesfully,generating corrupted MP4 file as output? [closed] - Rupashree Roy Newest 'ffmpeg' Questions - Stack Overflow
  I have build laptop screen recorder with internal and external audio using python and ffmpeg,but it couldn't store output file in Other video formats,excepts AVI,if I try to store it in MP4 format,ut's showing file is corrupted,what to do/ Here's the code, enter link description here -- enter link description here
• 08:44
  Flutter ffmpeg_kit_flutter_full_gpl-6.0.3 PluginRegistry.Registrar flutter version 3.29 - Lisa Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg_kit_flutter_full_gpl-6.0.3 for flutter version 3.27 but when upgrading to flutter 3.29, with android, there is an error PluginRegistry.Registrar registrar. Is there any solution to replace the current ffmpeg_kit_flutter_full_gpl because I see this library was updated 17 months ago /Users/pamcd/.pub-cache/hosted/pub.dev/ffmpeg_kit_flutter_full_gpl-6.0.3/android/src/main/java/com/arthenica/ffmpegkit/flutter/FFmpegKitFlutterPlugin.java:157: error: cannot find symbol public static void registerWith(final io.flutter.plugin.common.PluginRegistry.Registrar registrar) (...)

18 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:51
  FFMPEG: preset not found in Windows Vista - StackOverflowNewbie Newest 'ffmpeg' Questions - Stack Overflow
  I download FFMPEG from http://www.videohelp.com/tools/ffmpeg#download and saved it in my c:\\program files\\ffmpeg (Windows Vista). My Path's first 2 entries are: c:\\program files\\ffmpeg\\bin;c:\\program files\\ffmpeg\\presets; I found the following command on the net (http://paulrouget.com/e/converttohtml5video/) ffmpeg -i input.avi -acodec libvorbis -ab 96k -vcodec libx264 -vpre main -level 21 -refs 2 -b 345k -bt 345k -threads 0 -s 320x240 output.mp4 When I run this on command line, I get the following error: File for preset main (...) -- http://www.videohelp.com/tools/ffmpeg#download
• 20:21
  Is it possible to embed ffplay? - EthanL Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg's viewer, ffplay, has a lot of great options for optimizing viewing experience. I've been able to get it to nicely display an RTSP stream at low latency. However, it's been difficult to include it in a GUI. Is that possible? Is there a GUI that does that? Note: I am NOT trying to embed in a browser, or just toss the window on top of a GUI. Best solution: desktop GUI that includes ffplay in a widget First alternative: desktop GUI that has variable opacity. If the ffplay window is layered below the GUI, and the GUI is transparent, it could look (...)
• 17:40
  How to load file in ffmpeg in chunks? - developer1 Newest 'ffmpeg' Questions - Stack Overflow
  I'm having a problem when loading a larger file with ffmpeg in safari mobile, it crashes while doing that. Currently I'm loading the whole file at once await ffmpeg.writeFile(inputFileName, await fetchFile(file)); and to my understanding safari tries to load it in-memory in one go and fails. How can I work around this issue? Maybe split the file to chunks? Maybe streaming? Thank you.
• 18:32
  Ffmpeg to duplicate an audio stream and encode this new stream - sion Newest 'ffmpeg' Questions - Stack Overflow
  I have some video files that I need to re-encode due to compatibility issues. They are currently mkv files with h.264 video and ac3-a52 audio. I want to keep the h.264 video, convert the container to m4v and create two audio tracks, one with the original ac3-a52 and one copied from that but in aac stereo. I assume there has to be some sort of audio stream mapping command but I don't know how to map and re-encode at the same time. What command should I enter into ffmpeg to achieve this? Also, what is the difference between ac3 and ac3-a52? Will an apple TV still be (...)
• 18:53
  How to have a clean transition when concat MTS files using ffmpeg? - pho Newest 'ffmpeg' Questions - Stack Overflow
  I have been struggling for a while and I hope someone can help me. What I want to do: 1- seek MTS files 2- conact them without re-encoding them How I do that: I write a file concatList.txt file 'file1.MTS' file 'file1_cut.MTS' I execute ffmpeg -y -i file1.MTS -ss 11.5 -c copy -copyts file1_cut.MTS ffmpeg -y -f concat -i concatList.txt -c copy output.MTS (11.5s corresponds to an I-frame) The transition between the two videos in output.MTS is very buggy during more than 1s To dig in, I tried to analyse (...)
• 09:28
  How to implement FFMPEG retry logic [closed] - M9A Newest 'ffmpeg' Questions - Stack Overflow
  I am recording a live stream using the following code: ffmpeg -i -c copy output.mp4 This works fine for occasions where the stream is segmented in the sense that it will retry if the stream drops. However if the url no longer exists or returns a code such as 403, it will still retry, resulting in an infinite loop of retrying when the stream doesnt exist. How can I retry for segments but maybe retry only a few times for page errors?
• 13:23
  why mpd file contain same resolution AdaptationSet - Jahid Hasan Antor Newest 'ffmpeg' Questions - Stack Overflow
  this is the code that i used. this code create a minifest.mpd file, with the same resolution AdaptationSet set const createCourse = async (req: Request, res: Response, next: NextFunction) => try const VIDEO_STORAGE_PATH = path.join(__dirname, "../../public/uploads").replace(/\\\\/g, "/"); const videoId = req.body.videoId; const inputPath = path.join(VIDEO_STORAGE_PATH, "original", `$videoId.mp4`).replace(/\\\\/g, "/"); const outputDir = path.join(VIDEO_STORAGE_PATH, "dash", videoId).replace(/\\\\/g, "/"); if (!fs.existsSync(outputDir))  (...)
• 13:23
  Problems encoding audio stream for RTMP server using ffmpeg libraries - Filipe José Newest 'ffmpeg' Questions - Stack Overflow
  I am working on an C++ application that captures audio using miniaudio, and sends the data to a RTMP server running on nginx which will generate an HLS stream to be consumed by a web browser. I was successful in encoding the data and writing to an .flv file (which I believe to be the container for RTMP), and everything works out fine. I've also tested the server by running the ffmpeg cli tool directly, and the RTMP server is generating the .m3u8 playlist file as well as the .ts files correctly. The problem I'm having is that when I change the output on (...)
• 14:04
  Decoding the h.264 stream from a serial port - Peter Newest 'ffmpeg' Questions - Stack Overflow
  I would like to know if there is a reliable way to decode an H.264 NAL stream coming through a serial port using software. So far, I have managed to decode a single frame using a python script. In this script, I first write the incoming data to a file, and when the end-of-frame marker 00_00_00_01 appears, I display the frame using ffplay. import serial import subprocess import os import time ser = serial.Serial('COM3', 115200, timeout=1) output_file = "output.264" # Variable to store the ffplay process ffplay_process = (...)
• 12:11
  ffmpeg: is there a fast way for extracting several thumbnails from a video without parsing the video from the beginning every time? - archie Newest 'ffmpeg' Questions - Stack Overflow
  I tried several ways for extracting sample frames from a video file with ffmpeg. I found out that the fastest way is by placing the following command in a loop: ffmpeg -ss $frame_time -i "$input_video" -frames:v 1 -vf scale=256:-1 "$Work_dir/thumb$thumb_index.jpg" (I have omitted the parts of the command that are not relevant to the question, such as drawtext, hide_banner, loglevel). The variables frame_time and thumb_index are initialized before the loop and incremented by a fixed amount at every step: +1 for thumbs_index and $duration/25 for frame_time. I read in the (...) -- https://trac.ffmpeg.org/wiki/Seeking
• 12:50
  Decoding the h.264 stream from a COM port - Peter Newest 'ffmpeg' Questions - Stack Overflow
  I would like to know if there is a reliable way to decode an H.264 NAL stream coming through a serial port using software. So far, I have managed to decode a single frame using a python script. In this script, I first write the incoming data to a file, and when the end-of-frame marker 00_00_00_01 appears, I display the frame using ffplay. import serial import subprocess import os import time ser = serial.Serial('COM3', 115200, timeout=1) output_file = "output.264" # Variable to store the ffplay process ffplay_process = (...)
• 12:59
  Error Installing mobile-ffmpeg-full-gpl (4.4.LTS) via CocoaPods - 404 Not Found - Muhammad Accucia Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to install mobile-ffmpeg-full-gpl (4.4.LTS) in my iOS project using CocoaPods, but I am encountering a 404 error when CocoaPods attempts to download the framework. Here is the error message: \\[!\\] Error installing mobile-ffmpeg-full-gpl \\[!\\] /usr/bin/curl -f -L -o /var/folders/78/lk7swzb97ml4dt3zd9grny0c0000gn/T/d20250201-6580-dtli8h/file.zip https://github.com/tanersener/mobile-ffmpeg/releases/download/v4.4.LTS/mobile-ffmpeg-full-gpl-4.4.LTS-ios-framework.zip --create-dirs --netrc-optional --retry 2 -A 'CocoaPods/1.15.2 (...)

17 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:21
  Loading a larger file with ffmpeg crashes on safari mobile - developer1 Newest 'ffmpeg' Questions - Stack Overflow
  My use case is to extract audio from video file to minimize the size of sent file over network. Everything works fine on a computer (chrome, safari) but it's either stuck or crashes on ios safari. AFAIK it crashes not while executing the ffmpeg command, but while trying to load the input file, which is quite big (500MB+). I load the ffmpeg like this: const baseURL = "https://unpkg.com/ⓐffmpeg/core-mtⓐ0.12.6/dist/esm"; await ffmpeg.load( coreURL: await toBlobURL(`$baseURL/ffmpeg-core.js`, "text/javascript"), wasmURL: await (...)
• 12:55
  Convert .flac to .mp3 with ffmpeg, keeping all metadata - Vito Gentile Newest 'ffmpeg' Questions - Stack Overflow
  How can I convert .flac to .mp3 with ffmpeg, keeping all metadata (that is converting Vorbis comment in .flac files to ID3v2 metadata of .mp3)?

16 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:06
  FFMPEG : Invalid data found when processing input - Schüler Newest 'ffmpeg' Questions - Stack Overflow
  I am unable to upload mp3 or mp4 is there any specific path format? Here is my code. I have tried this also ffmpeg -i Video/" + Name + " -ss 01:30 -r 1 -an -vframes 1 -f mjpeg Video/" + Name + ".jpg exec("ffmpeg -y -i Video/" + Name + " -map_metadata -1 -ab 192k Video/" + Name + ".jpg", function(err) if (err) console.log(err) console.log('Done', 'Image' : 'Video/' + Name + '.jpg'); ); Here is the error Error: Command failed: ffmpeg -y -i (...)
• 03:12
  ffmpeg produces different file sizes between MacOS and Linux [closed] - kojow7 Newest 'ffmpeg' Questions - Stack Overflow
  I have several .wav files. When I use ffmpeg to convert to m4a, it produces different file sizes between the two systems. Example: original.wav (on MacOS) - 418004 bytes original.wav (on Linux) - 418004 bytes Method 1: for f in *.wav; do ffmpeg -i "$f" -c:a aac -b:a 96k "$f%.wav.m4a"; done MacOS - 18408 bytes Linux - 15814 bytes Method 2: for f in *.wav; do ffmpeg -i "$f" -c:a aac -b:a 192k "$f%.wav.m4a"; done MacOs - 36428 bytes Linux - 26060 bytes Method 3: for f in *.wav; do ffmpeg -i "$f" -c:a aac "$f%.wav.m4a"; done  (...)
• 02:55
  How to change metadata with ffmpeg/avconv without creating a new file? - Stephan Kulla Newest 'ffmpeg' Questions - Stack Overflow
  I am writing a python script for producing audio and video podcasts. There are a bunch of recorded media files (audio and video) and text files containing the meta information. Now I want to program a function which shall add the information from the meta data text files to all media files (the original and the converted ones). Because I have to handle many different file formats (wav, flac, mp3, mp4, ogg, ogv...) it would be great to have a tool which add meta data to arbitrary formats. My Question: How can I change the metadata of a file with ffmpeg/avconv (...)

15 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:49
  Can m3u8 files have mp4 file urls? - 89neuron Newest 'ffmpeg' Questions - Stack Overflow
  I am in a situation where I have my flv video converted to mp4 and then I am streaming this as http url using my nginx server. For multibitrate supoport on html5 I have created a m3u8 file like this : #EXTM3U #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=200111, RESOLUTION=512x288 http://streamer.abc.com:8080/videos/arvind1.mp4 #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=3000444, RESOLUTION=400x300 http://streamer.abc.com:8080/videos/arvind1.mp4 #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=400777, (...)

14 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:29
  Using FFmpeg encode and UDP with a Webcam? - Rendres Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get frames from a Webcam using OpenCV, encode them with FFmpeg and send them using UDP. I did before a similar project that instead of sending the packets with UDP, it saved them in a video file. My code is. #include #include #include #include extern "C" #include #include #include #include #include #include #include #include using namespace std; using namespace cv; #define WIDTH 640 #define HEIGHT 480 #define CODEC_ID AV_CODEC_ID_H264 #define (...)
• 16:48
  c++ - using FFmpeg encode and UDP with a Webcam - Rendres Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get frames from a Webcam using OpenCV, encode them with FFmpeg and send them using UDP. I did before a similar project that instead of sending the packets with UDP, it saved them in a video file. My code is. #include #include #include #include extern "C" #include #include #include #include #include #include #include #include using namespace std; using namespace cv; #define WIDTH 640 #define HEIGHT 480 #define CODEC_ID (...)
• 13:23
  Discord bot: Fix ‘FFMPEG not found’ - Travis Sova Newest 'ffmpeg' Questions - Stack Overflow
  I want to make my Discord bot join voice chat, but every time I run the command, I get an error message in the log(cmd) saying, FFMPEG not found. Picture of the error: This is the code: client.on('message', message => // Voice only works in guilds, if the message does not come from a guild, // we ignore it if (!message.guild) return; if (message.content === '/join') // Only try to join the sender's voice channel if they are in one themselves if (message.member.voiceChannel)  (...) --
• 12:02
  How to combine multiple images and multiple audio files into one video with ffmpeg? - nachocab Newest 'ffmpeg' Questions - Stack Overflow
  I have two images image1.png and image2.png, they both have the same dimensions. I also have two audio files audio1.wav and audio2.wav they each have different lengths. I want to make a video that shows image1.png during audio1.wav and then image2.png over audio2.wav. I've tried two methods, but they don't work. The images show correctly, but the durations are not synced with the audio. Method 1: create videos separately and combine them: image1 => video1 ffmpeg -loop 1 \\ -y \\ -i "image1.png" \\ -i "audio1.wav" \\ -c:v (...) -- , , , ,
• 00:18
  ffmpeg + docker: make install not installing libx265 when building the image, but works inside container - Alexander Santos Newest 'ffmpeg' Questions - Stack Overflow
  I have this Dockerfile FROM ubuntu:22.04 WORKDIR /usr/local/src ENV PKG_CONFIG_PATH=/usr/local/lib/pkgconfig RUN apt update && apt install -y \\ build-essential cmake git pkg-config \\ libxml2-dev yasm nasm libtool autoconf automake \\ libx264-dev libx265-dev libnuma-dev libvpx-dev \\ libfdk-aac-dev libmp3lame-dev libopus-dev \\ libass-dev libfreetype6-dev libvorbis-dev RUN apt-get install libx265-dev RUN git clone --depth 1 https://github.com/fraunhoferhhi/vvenc.git && \\ cd vvenc && \\  (...)

13 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:48
  How can I crop and encode a video using flutter natively, now that flutter_ffmpeg is discontinued with no alternatives? [closed] - Rageh Azzazy Newest 'ffmpeg' Questions - Stack Overflow
  As of January 6, 2025, FFmpegKit is officially retired (Taner's article). This also affects the flutter_ffmpeg and ffmpeg_kit_flutter packages. Most packages for executing video editing commands were built depending on them and so won't work after April 1, 2025 as mentioned in the package documentation and Taner's article. Some packages that depend on flutter_ffmpeg or ffmpeg_kit_flutter are: video_trimmer zero_video_trimmer flutter_video_trimmer video_trim bemeli_compress video_trimmer_pro ... others Editing video using (...) -- As of January 6, 2025, FFmpegKit is officially retired (Taner's article).
• 18:03
  How can I use physical computer's GPU on VMware Workstation? - ching Newest 'ffmpeg' Questions - Stack Overflow
  I want to use the GPU to accelerate video transcoding time by using FFmpeg on the virtual machine, VMware Workstation. When I use the command lspci | grep VGA, the output is 00:0f.0 VGA compatible controller: VMware SVGA II Adapter It seems that I only can use its own Graphic Card on VMware, right? How can I use my host computer's GPU, NVIDIA Quadro K2000, from a program running in a guest VM? Or is there another solution that can solve the problem mentioned in the (...)
• 17:59
  Convert video MP4 audio to MP3 using C# - Tom Lee Newest 'ffmpeg' Questions - Stack Overflow
  I have some videos in MP4 format and I'm trying to extract the audio from them. My code is: public static void Converter(string toConvert) toConvert = VideoFile + ".mp4"; var join = VideoFile.Split("-").ToList(); VideoFile = string.Format("0 - 1", join[0], join[1]); var outputFile = VideoFile + ".mp3"; var mp3Out = ""; var ffmpegProcess = new Process StartInfo = UseShellExecute = false, RedirectStandardInput = true, RedirectStandardOutput = true,  (...)
• 11:04
  Why does Apple support H.265 playback, but not when using HLS? [closed] - clark wu Newest 'ffmpeg' Questions - Stack Overflow
  Apple devices (iPhone, iPad, macOS Safari) can natively play H.265 (HEVC) videos in .mp4 or .mov format. However, when I try to convert the same video to HLS, it fails to play. Here’s what I tested: Test Cases ✅ Directly playing H.265 .mp4 → Works fine ❌ H.265 + Opus → HLS (fMP4) → Fails ❌ H.265 + AAC → HLS (TS) → Fails ✅ H.264 + Opus → HLS fMP4 → Works fine (video + audio) ✅ H.264 + Opus → HLS TS → Video plays, but no audio ❌ H.265 + AAC → HLS fMP4 → Doesn’t play at all FFmpeg Commands Used 1️⃣ H.265 + Opus (fMP4 (...)
• 11:17
  Force FFmpeg to use a non-standard codec in container/extension (opus in .m4b) - Craig Stevenson Newest 'ffmpeg' Questions - Stack Overflow
  For my audiobooks I am using a non standard combination of using the opus audio codec in m4b files (this works without issue on most devices for me as they support opus audio streams in mp4 containers). currently having to instruct ffmpeg to encode it into mp4 and i manually change the extension to m4b, as it gives this error if i try and do it directly despite it being the same container format: [ipod ⓐ 0x64872b2de9c0] Could not find tag for codec opus in stream #1, codec not currently supported in container Is there any comand or options to let me overide this and (...)
• 02:46
  flutter_ffmpeg is discontinued with no alternatives? - Rageh Azzazy Newest 'ffmpeg' Questions - Stack Overflow
  Based on this article by Taner Sener https://tanersener.medium.com/saying-goodbye-to-ffmpegkit-33ae939767e1 and after the discontinuation of flutter_ffmpeg and ffmpeg_kit_flutter packages. most packages for executing video editing commands were built depending on them and so won't work After April 1, 2025 as mentioned in the package documentation and Taner's article. example of packages depending on flutter_ffmpeg or ffmpeg_kit_flutter (...) -- https://tanersener.medium.com/saying-goodbye-to-ffmpegkit-33ae939767e1
• 02:05
  No accelerated colorspace conversion found from yuv420p to argb - Zac Chan Newest 'ffmpeg' Questions - Stack Overflow
  I am a novice at ffmpeg and have recently taken over a code base built by a previous engineer. The FFmpeg code is on an app engine that will edit the videos when they are uploaded. This code generated a title animation that will later be used as an overlay. exports.generateTitleAnimation = function(metadata, destPath, options = ) const peeqLogoPath = "/app/assets/peeq-logo.png"; const whiteBarMovPath = "/app/assets/whiteBar.mov"; const titleFontPath = "/app/assets/Sofia-Pro-Black.otf"; const dateStrFontPath = "/app/assets/Sofia-Pro-Medium.otf"; const (...)

12 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:06
  Extracting audio from video using fluent-ffmpeg - Idi Favour Newest 'ffmpeg' Questions - Stack Overflow
  Im trying to extract the audio from a video, an error is occuring Error converting file: Error: ffmpeg exited with code 234: Error opening output file ./src/videos/output-audio.mp3. Error opening output files: Invalid argument I use this same directory for my video compression that runs before this one and it works. ffmpeg() .input(url) .audioChannels(0) .format("mp3") .output("./src/videos/output-audio.mp3") .on("error", (err) => console.error(`Error converting file: $err`)) .on("end", async () => console.log("audio transcripts");  (...)
• 11:33
  How to create a circular video and overlay it on an image background while preserving transparency for MP4 output? - Mykyta Manuilenko Newest 'ffmpeg' Questions - Stack Overflow
  I have the following FFmpeg command that overlays a transparent webm video on a background image and preserves the transparency: ffmpeg -t 5 -framerate 25 -loop 1 -i "bg_image.png" -c:v libvpx-vp9 -i "transparent_video.webm" -y -filter_complex "[0:v]format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2[bg_image];[1:v]setpts=PTS-STARTPTS,setsar=1,pad=ceil(iw/2)*2:ceil(ih/2)*2[el_out_1];[bg_image][el_out_1]overlay=82:250,format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2[raw_video];[raw_video]format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2" -vcodec libx264 -f mp4 -t 5 -an -crf 23 -preset medium -copyts (...)

11 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:39
  How to split audio file into equal-length segments with ffmpeg? - GPWR Newest 'ffmpeg' Questions - Stack Overflow
  I want to split an audio file into several equal-length segments using FFmpeg. I want to specify the general segment duration (no overlap), and I want FFmpeg to render as many segments as it takes to go over the whole audio file (in other words, the number of segments to be rendered is unspecified). Also, since I am not very experienced with FFmpeg (I only use it to make simple file conversions with few arguments), I would like a description of the code you should use to do this, rather than just a piece of code that I won't necessarily understand, if possible. Thank you in (...)
• 16:25
  How to improve web camera streaming latency to v4l2loopback device with ffmpeg? - Made by Moses Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream my iPhone camera to my PC on LAN. What I've done: HTTP server with html page and streaming script: I use WebSockets here and maybe WebRTC is better choice but it seems like network latency is good enough async function beginCameraStream() const mediaStream = await navigator.mediaDevices.getUserMedia( video: facingMode: "user" , ); websocket = new WebSocket(SERVER_URL); websocket.onopen = () => console.log("WS connected"); const options = mimeType: "video/mp4", (...)
• 12:38
  Is it possible to redirect the messages libffmpeg prints to stderr? - wallefan Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a program that uses libffmpeg to do some transcoding internally, but I find it has a tendency to print a lot of things to the process's stderr. I want to redirect those messages somewhere more intelligent. To be clear, I am NOT talking about spawning the ffmpeg executable as a subprocess and redirecting its stdio! That is trivial in any programming language. I'm using ffmpeg as a C library (well, Rust bindings around a C library in my case) and I'm wondering if libffmpeg provides a hook for writing to stderr that I can override. If no such hook (...)
• 12:37
  av_log() function in ffmpeg to output to a file - TilakVarisetty Newest 'ffmpeg' Questions - Stack Overflow
  I am logging time-stamps, and frames using av_log() to the console. Unfortunately, the console does not pipe to a file. Is there a way to add function or other options to log to the file directly, instead of the console?
• 11:32
  Linker error by trying example program with ffmpeg - Chris Newest 'ffmpeg' Questions - Stack Overflow
  I think this might be a stupid question and I'm just blind but that thing is driving me nuts for hours now. I downloaded ffmpeg and build it. Now I want to try the thing out in a program but I can't setup cmake to link ffmpeg properly and have no idea what is wrong. The linker always tells me this: christophⓐchristoph-ThinkPad-T490:~/develop/ffmpg_example/build$ make [ 50%] Linking CXX executable test CMakeFiles/test.dir/main.cxx.o: In function `main': main.cxx:(.text+0x180): undefined reference to (...)

10 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:23
  How to seek one frame forward in ffmpeg [closed] - Summit Newest 'ffmpeg' Questions - Stack Overflow
  i want to seek one frame forward when i call this function but it gets stuck on the first frame seeked and does not move forward. void seekFrameUp() if (!fmt_ctx || video_stream_index == -1) return; AVRational frame_rate = fmt_ctx->streams[video_stream_index]->r_frame_rate; if (frame_rate.num == 0) return; // Avoid division by zero // Compute frame duration in AV_TIME_BASE_Q int64_t frame_duration = av_rescale_q(1, av_make_q(frame_rate.den, frame_rate.num), AV_TIME_BASE_Q); int64_t next_pts = requestedTimestamp + (...)
• 05:32
  How to Use SVG Image Files Directly in FFmpeg? [closed] - Pubg Mobile Newest 'ffmpeg' Questions - Stack Overflow
  I generated a bar chart race using the Flourish Studio website and captured the frames as a PDF sequence using a Python Playwright script. Then, I converted all the PDF files into SVG format using the following Python script, because SVG is the only image format that maintains quality without loss when zoomed in: import os import subprocess import multiprocessing # Define paths pdf2svg_path = r"E:\\Desktop\\dist-64bits\\pdf2svg.exe" # Full path to pdf2svg.exe input_dir = r"E:\\Desktop\\New folder (4)\\New folder" output_dir = r"E:\\Desktop\\New folder (4)\\New (...)
• 14:29
  FFMPEG compile with x264 support for Android - Pecana Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to build ffmpeg extensions for media3 (ExoPlayer) for Android https://github.com/androidx/media/tree/release/libraries/decoder_ffmpeg Using the default settings everything is fine but if I try to add support to libx264 the build failed. I compiled x264 for Android locally and it worked so the .so file for arm64 is present, I added it to the pkg-config with : export PKG_CONFIG_PATH=/build/x264/arm64/lib/pkgconfig:$PKG_CONFIG_PATH but when I try to build ffmpeg with the following command it fails : ./configure \\ --prefix=/build/ffmpeg (...) -- https://github.com/androidx/media/tree/release/libraries/decoder_ffmpeg
• 05:11
  OpenGL to FFMpeg encode [closed] - Ian A McElhenny Newest 'ffmpeg' Questions - Stack Overflow
  I have a opengl buffer that I need to forward directly to ffmpeg to do the nvenc based h264 encoding. My current way of doing this is glReadPixels to get the pixels out of the frame buffer and then passing that pointer into ffmpeg such that it can encode the frame into H264 packets for RTSP. However, this is bad because I have to copy bytes out of the GPU ram into CPU ram, to only copy them back into the GPU for encoding. How do you do bypass the need to copy to and from the (...)
• 01:01
  No such filter in ffmpeg - sneha desai Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create the slideshow with below command. Here is the command I have executed: ffmpeg -loop 1 -t 1 -i /sdcard/input0.png -loop 1 -t 1 -i /sdcard/input1.png -loop 1 -t 1 -i /sdcard/input2.png -loop 1 -t 1 -i /sdcard/input3.png -loop 1 -t 1 -i /sdcard/input4.png -filter_complex "[0:v]trim=duration=15,fade=t=out:st=14.5:d=0.5[v0]; [1:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v1]; [2:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v2];  (...) -- https://github.com/WritingMinds/ffmpeg-android-java

9 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:06
  ffmpeg arguments for youtube upload [duplicate] - Hoopes Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently having an issue in my ios app where youtube sharing of a video created by ffmpeg seems broken. I am starting with an audio file, and an image that I will use as the static background of the video. ffmpeg -y -i "/path/to/audio.m4a" -r 24 -i "/path/to/background.png" -codec:a aac_at -codec:v h264_videotoolbox -brand mp42 -vf "scale=1080:1080" -vf "scale=out_color_matrix=bt709" -color_primaries bt709 -color_trc bt709 -colorspace bt709 -movflags +faststart "output.mp4" Note that since (...) --
• 19:50
  Decoding and playing audio with ffmpeg and XAudio2 - frequency ratio wrong - Brent de Carteret Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to decode audio and output it using the XAudio2 API, it works and plays synced with the video output using the pts. But it's high pitched (i.e. sounds like chipmunks). Setting breakpoints I can see it has set the correct sample rate from the audio codec in CreateSourceVoice. I'm stumped. Any help would be much appreciated. CDVDAUDIO.cpp #include "DVDAudioDevice.h" HANDLE m_hBufferEndEvent; CDVDAudio::CDVDAudio() m_pXAudio2 = NULL; m_pMasteringVoice = NULL; m_pSourceVoice = NULL; m_pWfx = (...)
• 18:38
  Can't import moviepy due to missing ffmpex.exe - SilentGrove_99 Newest 'ffmpeg' Questions - Stack Overflow
  I was trying to create an application with python using the moviepy library. I installed it using: pip install moviepy I found this from a MoviePy crash-course: # Import everything needed to edit video clips from moviepy.editor import * # or from moviepy import * # moviepy v2 after removal of editor After trying to run this line i get this error: Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> # Import everything (...)
• 16:46
  How to Capture a Sequence of High-Quality PDF Frames from a Website (Without Screen Recording)? - Pubg Mobile Newest 'ffmpeg' Questions - Stack Overflow
  In Firefox, I can take very high-quality screenshots of a webpage by using Ctrl + P and saving the page as a PDF. This method preserves the text, images, and code in excellent resolution. Now, I have created a movable bar chart race in Flourish Studio and want to convert it into a high-quality video. However, I do not want to use screen recording tools. My Goal: I want to capture 30 high-resolution PDF frames from the website at different points in time (like a video sequence). Ideally, I need a tool or script that can automate the process of saving multiple PDFs from (...)
• 16:04
  How can I dynamically update metadata in audio output with libav so that updates appear in MPV? - Teddy Newest 'ffmpeg' Questions - Stack Overflow
  My ultimate goal is to proxy an internet radio station and programmatically add metadata to it during the stream that can be displayed and updated in MPV, the media player playing the audio. The metadata I would like to add is primarily the song title, but ideally additional information including artist, composer, and album. I envision running the proxy program like this: $ curl https://example.com/stream.mp3 | ./proxy_add_metadata | mpv - or maybe this: $ ./proxy_add_metadata & #=> $ mpv How could I make song metadata updates (...)

8 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:41
  Embedding "Dolby Digital Plus with Dolby Atmos" into MP4 using ffmpeg - Krystian Newest 'ffmpeg' Questions - Stack Overflow
  How can I encode Dolby Atmos into MP4? I am using this command ffmpeg -i input.mp4 -i input.ec3 -map 0:v -map 1:a -c:v copy -c:a copy -disposition:a default -metadata:s:a:0 complexity_index=16 -metadata:s:a:0 title="Dolby Atmos" output_test.mp4 I have to provide every single piece of data that is inside this EC3 file. I have noticed that when I am running this command the MP4 file contains actual Dolby Atmos stream but it's missing complexity index. Raw EC3 file has Complexity Index set to 16 but after adding it to MP4 file the complexity index is not present and this MP4 is not (...)
• 02:45
  I use the bramp/ffmpeg-cli-wrapper of java. How to terminate the execution in the thread? - Hao Tan Newest 'ffmpeg' Questions - Stack Overflow
  I want to use ffmpeg to achieve streaming function First I created a thread pool private final Map taskThreads = new ConcurrentHashMap<>(); Thread taskThread = new Thread(() -> try private void startTask(Device task) Thread taskThread = new Thread(() -> FFmpegBuilder builder = new FFmpegBuilder() .setInput(source) .overrideOutputFiles(true) .addOutput(destination) .setFormat("flv") .addExtraArgs("-c", "copy") .done(); FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);  (...)
• 01:36
  Undefined reference to FFMPEG function despite linking via CMake - MysticTortoise Newest 'ffmpeg' Questions - Stack Overflow
  I am attempting to integrate FFMPEG's libav library into my project. I use CMake and want to build FFmpeg from source since I want to configure things specifically for my use case. I have compiled the files into .a archive static libraries which are included in my project, but i continually get an error: CMakeFiles/ffmpegtest.dir/main.cpp.obj:main.cpp:(.text+0xc): undefined reference to avformat_alloc_context I've tried a variety of solutions online but none seem to work. I've stripped the project down to the bare minimum and yet it continues to produce this (...)

7 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:36
  How to stream frames from ffmpeg to a process? - Vorac Newest 'ffmpeg' Questions - Stack Overflow
  I would like to encrypt camera frames before transmitting. For that purpose the encrypting process needs to get the raw frames through some mode of IPC. I tried reading through the steaming API docs but got lost. This is an "what approach" question instead of a "working solution" one. -- steaming API docs
• 20:42
  FFMpeg D3D11 decoded image to OpenCV UMat - Spuriga Newest 'ffmpeg' Questions - Stack Overflow
  I would like to copy FFMpeg decoded image data to an UMat WITHOUT copying it to the CPU RAM: Is there any way to do it? What if there are two or more GPU card in the PC? I have this code for av_image_copy_to_buffer, works fine: int copy_frame_to_buffer(void* handle, void* buffer, int bufferSize) int ret = 0; int calculatedBufferSize; VideoDecoderContext* context = static_cast(handle); calculatedBufferSize = av_image_get_buffer_size(static_cast(context->frame->format), context->frame->width, context->frame->height, 1); if (...) --
• 17:32
  ffmpeg command not found but pip list shows ffmpeg - your_doomsday07 Newest 'ffmpeg' Questions - Stack Overflow
  I have been trying to install ffmpeg using the command pip install ffmpeg and I am doing this in a server where we dont have sudo permissions. On writing ffmpeg I get ffmpeg: command not found. Then I checked with pip list and it showed ffmpeg. Please help me.
• 08:38
  rtsp feed fails intermittently using node js - Prem Kumar Newest 'ffmpeg' Questions - Stack Overflow
  I am new to node.js and was debugging a code written by another developer. We have a an IP camera which provides rtsp feed which is being displayed on a webpage. I can view the camera feed using the rtsp url in VLC but the web viewer of camera feed usually gives white screen although it somehow works intermittently. I was told that it used to work properly when the machine was on Ubuntu 20.04 now it has been updated to Ubuntu 24. Index.js const Stream = require("node-rtsp-stream-jsmpeg"); const fs = require("fs"); const https = require("https"); const (...) -- ,
• 01:17
  FFmpeg extract every frame with timestamp - Ruan Matt Newest 'ffmpeg' Questions - Stack Overflow
  How can I extract every frame of an video with the respective timestamp? ffmpeg -r 1 -i in.mp4 images/frame-%d.jpg This code extracts all frames, but without timestamp. Since Windows do not allow ":" in filenames, I'll replace it for ".". I would like something like this: frame-h.m.s.ms.random_value.jpg frame-00.10.15.17.1.jpg frame-00.11.16.04.2.jpg frame-00.11.17.11.3.jpg frame-00.11.17.22.4.jpg frame-00.12.04.01.5.jpg ... The reason of "random id" is to allow repeated frames without replacing them. I have tried: ffmpeg (...)
• 02:06
  how to add effect to audio, sound like a phone call phone, inner monologue, or sounds like a man/woman? [closed] - Mathew Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to apply different audio effects, such as making audio sound like a phone call. Below is my current approach. As you can see, I'm using multiple filters and simple algorithms to achieve this effect, but the output quality isn't ideal. I've looked into FFmpeg filters and noticed mentions of LADSPA/LV2 plugins. Are these viable solutions? Any other suggestions would be greatly appreciated. public static void applySceneEffect(String inputPath, String outputPath, int sceneType) LOGGER.info("apply scene effect to ", sceneType, (...)

6 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:30
  Mp4 video from ffmpeg to rtsp format - damini chopra Newest 'ffmpeg' Questions - Stack Overflow
  I want to MP4 file feed from FFmpeg to RTSP stream. I am using below command : ffmpeg -re -i /root/test_video.mp4 -f rtsp -muxdelay 0.1 http://x.x.x.x:8050/feed1.ffm Connection to tcp://x.x.x.x:8050?timeout=0 failed: Connection refused Could not write header for output file #0 (incorrect codec parameters ?): Connection refused Error initializing output stream 0:0 -- [aac ⓐ 0x25b3200] Qavg: 11662.538 [aac ⓐ 0x25b3200] 2 frames left in the queue on closing Conversion failed! Please (...)
• 18:32
  Batch Convert all .MOV in a directory to mp4s - anjchang Newest 'ffmpeg' Questions - Stack Overflow
  Just downloaded a whole bunch of videos from my phone to desktop. How to convert all the .MOV files in a directory to mp4s quickly, using ffmpeg.
• 14:49
  How does FFmpeg determine the “attached pic” and “timed thumbnails” dispositions of an MP4 track? - obskyr Newest 'ffmpeg' Questions - Stack Overflow
  The Issue FFmpeg has a concept of “dispositions” – a property that describes the purpose of a stream in a media file. For example, here are the streams in a file I have lying around, with the dispositions emphasized: Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 251 kb/s (default) Metadata: creation_time : 2021-11-10T20:14:06.000000Z handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream #0:1[0x2](und): Video: mjpeg (Baseline) (jpeg / 0x6765706A), yuvj420p(pc, bt470bg/unknown/unknown), (...) -- MP4v2, MP4 Box, the files’ respective atom trees,, searching for “attached_pic”, the MP4 muxer movenc.c
• 14:27
  How to stream synchronized video and audio in real-time from an Android smartphone using HLS while preserving orientation metadata? - Jérôme LAROSE Newest 'ffmpeg' Questions - Stack Overflow
  Hello, I am working on an Android application where I need to stream video from one or two cameras on my smartphone, along with audio from the microphone, in real-time via a link or web page accessible to users. The stream should be live, allow rewinding (DVR functionality), and be recorded simultaneously. A latency of 1 to 2 minutes is acceptable, and the streaming is one-way. I have chosen HLS (HTTP Live Streaming) for its browser compatibility and DVR support. However, I am encountering issues with audio-video synchronization, managing camera (...)
• 09:51
  Are there any libraries on adding effect to audio, like phone, inner monologue, or sounds like a man/woman? [closed] - Mathew Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to apply different audio effects, such as making audio sound like a phone call. Below is my current approach. As you can see, I'm using multiple filters and simple algorithms to achieve this effect, but the output quality isn't ideal. Since I need to implement many sound effects/filters, are there any ready-to-use libraries that could help? I've looked into FFmpeg filters and noticed mentions of LADSPA/LV2 plugins. Are these viable solutions? Any other suggestions would be greatly appreciated. public static void applySceneEffect(String (...)

5 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:08
  Generating grey nosie with FFmpeg - Azat Khabibulin Newest 'ffmpeg' Questions - Stack Overflow
  I have the following sound configuration: sub-bass: -inf dBFS low bass: -inf dBFS bass: -inf dBFS high bass: -inf dBFS low mids: 0 dBFS mids: 0 dBFS high mids: -inf dBFS low treble: -inf dBFS treble: -inf dBFS high treble: -inf dBFS If you wonder what is it, you can listen to this sound here. I'd like to create an audio file provided this sound configuration. FFmpeg filters seem like a good fit, but are not a strict requirement. It may be any command-line tool that handles this kind of task well. The problem is that I (...) -- here
• 20:57
  Can't show image with opencv when importing av - Flojomojo Newest 'ffmpeg' Questions - Stack Overflow
  When importing the PyAv module, I am unable to show an image with opencv using imshow() Code without the PyAv module (works as expected) import cv2 img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) Code with the import (doesn't work, just hangs) import cv2 import av img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) OS: Linux arch 5.18.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 09 Jun 2022 16:14:10 +0000 x86_64 GNU/Linux Am I doing (...)
• 14:55
  opencv read error:[h264 ⓐ 0x8f915e0] error while decoding MB 53 20, bytestream -7 - Alex Luya Newest 'ffmpeg' Questions - Stack Overflow
  My configuration: ubuntu 16.04 opencv 3.3.1 gcc version 5.4.0 20160609 ffmpeg version 3.4.2-1~16.04.york0 and I built opencv with: cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D PYTHON_EXECUTABLE=$(which python) -D OPENCV_EXTRA_MODULES_PATH=/home/xxx/opencv_contrib/modules -D WITH_QT=ON -D WITH_OPENGL=ON -D WITH_IPP=ON -D WITH_OPENNI2=ON -D WITH_V4L=ON -D WITH_FFMPEG=ON -D WITH_GSTREAMER=OFF -D WITH_OPENMP=ON -D WITH_VTK=ON -D BUILD_opencv_java=OFF -D BUILD_opencv_python3=OFF -D WITH_CUDA=ON -D ENABLE_FAST_MATH=1 -D (...)
• 10:56
  How does FFmpeg determine the dispositions of an MP4 track? - obskyr Newest 'ffmpeg' Questions - Stack Overflow
  The Issue FFmpeg has a concept of “dispositions” – a property that describes the purpose of a stream in a media file. For example, here are the streams in a file I have lying around, with the dispositions emphasized: Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 251 kb/s (default) Metadata: creation_time : 2021-11-10T20:14:06.000000Z handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream #0:1[0x2](und): Video: mjpeg (Baseline) (jpeg / 0x6765706A), yuvj420p(pc, bt470bg/unknown/unknown), (...) -- MP4v2, MP4 Box, the files’ respective atom trees,, searching for “attached_pic”, the MP4 muxer movenc.c

4 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:51
  Extracting frames from videos using ffmpeg, unpredictable behaviour [closed] - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I am using this ffmpeg command to generate a bunch of images captures from a video: ffmpegCommand([ "-i", inputPath, "-vf", `select='not(mod(n,$frame_interval))',setpts='N/($fps*TB)'`, "-s", `320x200`, "-f", "image2", outputPath, ]); it is the most frame accurate method according to what I have researched on google and SO. this works well when the video is around 30 fps, with around 250 frame_interval. but when video is 5 fps, frame interval should obviously be lower, at around 70, because there (...)
• 16:38
  How to output fragmented mp4 with ffmpeg? - S B Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg -i infile.avi out.mp4 outputs non-fragmented MP4. How do I obtain fragmented mp4? Update A fragmented mp4 file is internally divided into several back-to-back chunks or MPEG-4 movie fragments. Each chunk has its own moof atom - so there are several moof atoms interleaved in the file instead of a single moov at the end as in the case of an unfragmented mp4. This makes it easier to stream over slow networks where buffering is involved There are several tools like mp4box that convert a normal mp4 to a fragmented one. Unfortunately we cannot use (...) -- mp4box
• 15:59
  PowerShell script to Embed Album art in MP3 files - issues with accelerated audio files in ffmpeg - moshe baruchi Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to embed album art into an MP3 file using a PowerShell script along with the TagLib library. The MP3 file has been speed-boosted using FFmpeg. When I run the script on regular audio files, it works fine, but with the accelerated audio files, the album art is only visible when I open the file in MP3Tag or in VLC. It's not showing up in Windows audio players and definitely not in File Explorer. PowerShell code param ( [string]$audio, [string]$picture ) Add-Type -Path "TagLib-Sharp.dll" $audioFilePath = $audio $albumArtPath = (...)
• 01:20
  How to stream from dynamically created Selenium Moon browser pods to RTMP using ffmpeg? - Ahmed Seddik Bouchiba Newest 'ffmpeg' Questions - Stack Overflow
  I'm running Selenium Moon (from Aerokube) in my minikube cluster for automated browser testing, and I need to stream the browser sessions to an RTMP endpoint. Here's my current setup: $ kubectl get all -n my-namespace NAME READY STATUS RESTARTS AGE pod/minio-5b85cc6cd6-nznwl 1/1 Running 1 (48m ago) 2d8h pod/moon-7db8b9c76f-8jzzm 4/4 Running 0 34m pod/moon-7db8b9c76f-kp78j 4/4 Running 0 34m NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/minio NodePort 10.99.231.25 9000:31147/TCP,9001:31125/TCP 2d8h service/moon NodePort 10.100.244.255 (...)

3 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:33
  understanding HEVC NAL SEI termination and byte alignment parsing with ffmpeg - rodeomacon Newest 'ffmpeg' Questions - Stack Overflow
  The NAL SEI timecode message I am currently writing to file is 00 00 01 4E 01 88 06 XX XX XX XX XX 10 80 (The termination portion being 10 80, payloadSize set to 0x06 and the XX bytes being an encoding of the frames/seconds/minutes/hours). My goal is to read the timecode with ffmpeg -i video.h265 -c:v copy -bsf:v trace_headers -f null - and ffprobe -show_frames video.mov with no errors. The 3 left most 0 bits of the final 0x10 byte are the conclusion of the time_offset_length (Equal to 0) data. Following this, I am intending to have a rbsp_stop_one_bit followed by four (...)
• 17:44
  Decoding HEVC with Alpha Channel via NVDEC: Monochrome (4:0:0) Workarounds? [closed] - Holy_diver Newest 'ffmpeg' Questions - Stack Overflow
  I’m working on decoding HEVC streams that include an alpha (transparency) channel using NVIDIA’s NVDEC. The alpha channel is encoded in monochrome (YUV 4:0:0), but NVDEC’s HEVC decoder appears to lack support for monochrome formats. How can I work around this limitation? Problem Details: HEVC Profile: Stream uses HEVC_Rext (Range Extensions) with a monochrome alpha layer (4:0:0 chroma subsampling). NVDEC Limitations: The SDK documentation states support for 4:0:0 (8-bit) only for specific codecs like JPEG, not HEVC. Attempting to decode returns (...)
• 22:02
  Rounded corners in subtitle (Advanced Substation Alpha [.ass]) - Leander Mihm Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to have rounded corners with the BorderStyle 4 in .ass (Advanced Substation Alpha)? I only found out that the BorderStyle 4 exists, because I was looking at this stackoverflow. Is there any good and complete documentation of the Advanced Substation Alpha format? I'm currently using the following configuration: BorderStyle=4 Outline=10 --
• 21:35
  FFmpeg matlab error: At least one output file must be specified? [closed] - as moh Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get I frames from a video using Matlab using this command system(sprintf('ffmpeg -i testVid.mp4 -vf "select=eq(pict_type\\,I)" -vsync vfr output_%03d.png')); ,but i get this message ffmpeg version 7.1-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers built with gcc 14.2.0 (Rev1, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma (...)
• 15:58
  How can I create a video from images using FFmpeg in different scenarios? - Meet Developer Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a video from images using FFmpeg in different scenarios, and my commands work on Windows but not in Android Studio. I am using this library in my Android project: implementation("com.arthenica:ffmpeg-kit-full:6.0-2") When I run the commands, I get this error in Logcat: [vost#0:0 ⓐ 0x73746c8800] Unknown encoder 'libx264'. Here are the commands I tried: When I have a list of images and a total duration, so each image's duration is automatically calculated based on the total duration. (For example, 3 images and a total (...)
• 04:56
  ffmpeg video recording hangs in Emacs - Nutritioustim Newest 'ffmpeg' Questions - Stack Overflow
  A. Using ffmpeg, both of these audio and video captures work correctly in a shell. # Audio ffmpeg -y -f avfoundation -t 5 -i :0 -c:a aac audio-recording.m4a # Video # i. video only # ii. audio & video ffmpeg -y -f avfoundation -framerate 30 -i 0 -t 10 -c:v libx264 -preset fast -pix_fmt yuv420p video-recording.mp4 ffmpeg -y -f avfoundation -framerate 30 -pixel_format "uyvy422" -i 0:0 -t 10 -c:v libx264 -preset fast -pix_fmt yuv420p audio-video-recording.mp4 B. In Emacs (29.4, "Emacs For Mac OS X"), this audio code block completes, and prints (...)

2 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:32
  Why my ffmpeg command works only first several minutes? [closed] - О. Войтенко Newest 'ffmpeg' Questions - Stack Overflow
  I have my own ffmpeg exec command in the docker for writing rtsp stream by motion detection and make segments every 60 sec. But This command detect correctly only first 1-2 minutes, and without any errors ffmpeg does not detect motion. I'm using the latest version ffmpeg. docker run -d -v /etc/localtime:/etc/localtime:ro \\ -v /etc/timezone:/etc/timezone:ro \\ --tmpfs /tmpfs:rw,noexec,nosuid,size=100M,mode=1777 \\ -v /data/ARCHIVE:/ARCHIVE \\ -e ARCHIVE_PATH="/ARCHIVE/Cam1" \\ --restart=unless-stopped \\ -d --name rec-Cam1 \\ ffmpeg-recorder -loglevel debug (...)
• 01:03
  FFMPEG HLS stream for Android and IOS - Poda Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream to mobile devices with ffmpeg and apache2.2 but I haven't been successful. I used this command to create the segments and the playlist: ffmpeg -i http://x.x.x.x:8080 -codec:v libx264 -r 25 -pix_fmt yuv420p -profile:v baseline -level 3 -b:v 500k -s 640x480 -codec:a aac -strict experimental -ac 2 -b:a 128k -movflags faststart -flags -global_header -map 0 -f hls -hls_time 10 -hls_list_size 5 -hls_allow_cache 0 -sc_threshold 0 -hls_flags delete_segments -hls_segment_filename out%05d.ts list.m3u8 The source is a http stream which (...)

1er mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:08
  No udp being received on LAN after sending via ffmpeg [closed] - g00se Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream a webcam over my LAN with ffmpeg -s 640x480 -i /dev/video2 \\ -framerate 10 \\ -preset ultrafast -tune zerolatency codec libx264 \\ -f mpegts udp://192.168.1.237:8081 This is all fine when consumed with ffplay -fflags nobuffer -flags low_delay -framedrop udp://192.168.1.237:8081 on the same box, but when I try to run that same ffplay on another box on my LAN, then, nothing. Any ideas please? Also, the following as 'client' simply hangs: nc -u 192.168.1.237 8081 | (...)
• 06:42
  How can I run FFPROBE in a Python script without triggering the Windows Command window? - fnord12 Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmeg/ffprobe to get video durations (in an addon for Kodi). The code: result = subprocess.run(["ffprobe", "-hide_banner", "-v", "quiet", "-show_entries", "format=duration", "-of", "default=noprint_wrappers=1:nokey=1", filename], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) The above code and the file importing that code both have a .pyw extension (after first trying regular .py). This works fine but in Windows 11 it causes the black Windows Command window to briefly flash for each video, despite the -hide_banner flag and loglevel being set to (...)

28 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:09
  How to parallelize ffmpeg setPTS filter when using GPU? [closed] - Souvic Chakraborty Newest 'ffmpeg' Questions - Stack Overflow
  We have a long python code which chunks the video into multiple parts and changes the speed using setPTS filter. import ffmpeg ffmpeg.input(segment_path).filter("setpts", f"1/speed_factor*PTS").output( adjusted_segment_path,vcodec="h264_nvenc", acodec="aac",preset="fast", crf=23, g=30, keyint_min=30, sc_threshold=0,r=30,vsync='cfr',threads=1 ).global_args("-hwaccel", "cuda").run(quiet=True, overwrite_output=True,capture_stdout=True, capture_stderr=True) Now, because this happens multiple times before concatenation, we thought, instead of sequential (...)
• 21:34
  Can VLC's method for estimating the duration of a video be reproduced by the means of ffmpeg? - archie Newest 'ffmpeg' Questions - Stack Overflow
  This may seem to duplicate previous questions but it does not, as far as I can tell. I have a bash script for indexing images and videos to a thumbnails database. A user of my script complained that some videos of hers are skipped over with an error message "corrupted metadata" even though VLC can play them smoothly. These are about 10 videos out of some 15 thousand, but I'd like to solve the problem. I will focus on a single video from the bunch. File name: "Paper_and_discussion_M492.mkv", actual duration 02:03:47 (hh:mm:ss). The duration and bitrate fields in the video (...)
• 20:30
  Bash script to automate FFmpeg operations fails when calling the command, but copy-pasting the generated command into the terminal works [duplicate] - GaboScharff99 Newest 'ffmpeg' Questions - Stack Overflow
  I wrote a bash script which automates a number of conversion operations on video files using FFmpeg. Oddly enough, the FFmpeg call itself now fails when running the script, with a very confusing error message, I might add, but when I copy the command generated by the script into the terminal and run it, it works flawlessly. I'm sorry to insert such a long code block here, but considering how strange this error is, it might be anywhere in the script, so here it (...)
• 07:25
  HLS script has been lost to time, previous content was made in specific format, attempting to recreate using FFMPEG primitives - Wungo Newest 'ffmpeg' Questions - Stack Overflow
  Looking to add this video to a stitched playlist. The variants, encoding, and everything must match exactly. We have no access to how things were done previously, so I am literally vibing through this as best as I can. I recommend using a clip of buck bunny that's 30 seconds long, or the original buck bunny 1080p video. #!/bin/bash ffmpeg -i bbb_30s.mp4 -filter_complex " [0:v]split=7[v1][v2][v3][v4][v5][v6][v7]; [v1]scale=416:234[v1out]; [v2]scale=416:234[v2out]; [v3]scale=640:360[v3out]; [v4]scale=768:432[v4out]; [v5]scale=960:540[v5out]; [v6]scal

27 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:48
  How to use multiple map values in ffmpeg-python? - kamoloff Newest 'ffmpeg' Questions - Stack Overflow
  How can I use multiple map values for different resolutions in ffmpeg-python? -map [v1out] -c:v:0 libx264 -b:v:0 1900k -bufsize 3800k \\ -map [v2out] -c:v:1 libx264 -b:v:0 900k -bufsize 1800k \\
• 15:02
  I can't understand how to use ffmpeg in javascript (if it's even possible) - Laimonas Rupeika Newest 'ffmpeg' Questions - Stack Overflow
  Straight to the problem, I want to use ffmpeg in my javascript project for video editing. So I found cdn: which references to "https://github.com/Kagami/ffmpeg.js", which is ffmpeg port to javascript as I understand? I don't get any errors on import, but if I try loading ffmpeg: // Initialize FFmpeg after the GAPI client is loaded const ffmpeg = createFFmpeg( log: true ); // // Load the FFmpeg library await ffmpeg.load(); I get error: Uncaught (in promise) ReferenceError: createFFmpeg is not defined at initializeGapiClient (index:89:18) and it (...)
• 07:32
  Use FFmpeg concat two video, is output video level mistake? - 哇哈哈 Newest 'ffmpeg' Questions - Stack Overflow
  video1 "index": 0, "codec_name": "hevc", "codec_long_name": "H.265 / HEVC (High Efficiency Video Coding)", "profile": "Main", "codec_type": "video", "codec_tag_string": "hev1", "codec_tag": "0x31766568", "width": 1920, "height": 1080, "coded_width": 1920, "coded_height": 1080, "has_b_frames": 2, "sample_aspect_ratio": "1:1", "display_aspect_ratio": "16:9", "pix_fmt": "yuv420p", "level": 120, "color_range": "tv", "chroma_location": "left", "field_order": "progressive", "refs": 1,  (...)

26 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:45
  Does ffmpeg violate the SAT>IP specification (DESCRIBE syntax)? [closed] - Eric Woltermann Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to play a SAT>IP stream using ffmpeg -i rtsp://sat.ip/?src=1&freq=11493&pol=h&sr=22000&msys=dvbs&pids=0,5100,5101,5101,8191, which returns method DESCRIBE failed: 404 Not Found. For reference, VLC plays the stream just fine. When tcpflowing the ffmpeg traffic, I get the following: 192.168.002.104.34018-192.168.002.222.00554: OPTIONS rtsp://sat.ip:554/?src=1&freq=11493&pol=h&sr=22000&msys=dvbs&pids=0,5100,5101,5101,8191 RTSP/1.0 CSeq: 1 User-Agent: (...) -- http://www.satip.info/sites/satip/files/resource/satip_specification_version_1_2_2.pdf
• 14:01
  How to encode jpeg images to H264 very fast (transform images to video) - Paul Newest 'ffmpeg' Questions - Stack Overflow
  I have 30 JPEG images (.jpg) at a resolution of 480 x 640. Each image takes aboout 20KB (all of them takes about 600KB). I am using FFmpeg command to encode these images into a video in H264 format. I need this to be done very fast - about 1 second. Using the classic command: ffmpeg -y -f image2 -r 1/5 -i image_%d.jpg -c:v libx264 -r 30 video.mp4 takes about 90 seconds. After adding -preset ultrafast: ffmpeg -y -f image2 -r 1/5 -i image_%d.jpg -c:v libx264 -preset ultrafast -r 30 video.mp4 the (...)
• 12:05
  FFMpeg Coding in C: Encoder returns EOF at first interaction. Encoder not opened correctly? [closed] - Davidhohey Newest 'ffmpeg' Questions - Stack Overflow
  as I'm fairly new to FFMpeg Programming and C in general, the code looks like a mess. I have smashed my head against a wall trying to get this code to work for about a week. int decode_encode_pipeline(AVFormatContext *Input_Format_Context, AVFormatContext *Output_Format_Context, int *streams_list) const AVCodec *DECodec, *ENCodec; AVCodecContext *DECodecContext = NULL, *ENCodecContext = NULL; AVCodecParameters *CodecParameters = NULL; AVDictionary *opts = NULL; AVPacket *Packet; AVFrame *Frame; int check; Packet = (...)
• 05:55
  FFmpeg WASM writeFile Stalls and Doesn't Complete in React App with Ant Design - raiyan khan Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFmpeg WebAssembly (WASM) in a React app to process and convert a video file before uploading it. The goal is to resize the video to 720p using FFmpeg before sending it to the backend. Problem: Everything works up to fetching the file and confirming it's loaded into memory, but FFmpeg hangs at ffmpeg.writeFile() and does not proceed further. No errors are thrown. Code Snippet: Loading FFmpeg const loadFFmpeg = async () => if (loaded) return; // Avoid reloading if already loaded const baseURL = (...)
• 03:19
  ffmpeg fails on conversion from .mov to .mp4 fails aT 98% - user2241249 Newest 'ffmpeg' Questions - Stack Overflow
  Our code is below. When converting a uploaded .mov to .mp4 the conversion halts at 98%. Almost all of our other preferred formats encode flawlessly. Anyone has any clue on where we went wrong? We are struggling on this for a while now so we want to ask the experts, thanks in advance for any help. <?php $Path = dirname(__FILE__) . "/"; $url = "http://" . $_SERVER['SERVER_NAME'] . str_replace('\\\\', '/', dirname($_SERVER['SCRIPT_NAME'])) . "/"; session_start(); include_once (...)

25 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:00
  Create Android application which to convert RTSP url into Srt url and play streaming using exoplayer or ffplay [closed] - Anuj Vaish Newest 'ffmpeg' Questions - Stack Overflow
  Create Android application which to convert RTSP url into Srt url and play streaming using exoplayer or ffplay: Step 1: (it's done) Docker convert mp4 file to RTSP URL (rtsp://10.10.15.25:8554/mystream)and verify in ffplay "ffplay -rtsp_transport tcp rtsp://10.10.15.24:8554/mystream" Step 2: RTSP URL run on Exoplayer (it's done) Pending: Step 3: RTSP Url conversion SRT URL (srt://live.cloudflare.com:778?passphrase=&streamid=) it's playback: srt://live.cloudflare.com:778?passphrase=&streamid=play Step 4: Play SRT URL in Exoplayer or (...)
• 21:02
  while build a demo about ffmpeg , it occurs : undefined reference to `av_register_all' - Cody Newest 'ffmpeg' Questions - Stack Overflow
  This problem has bothered me for days. After I compile and install FFmpeg, I try to build a demo using it, but it always fails. The demo is: #include "libavcodec/avcodec.h" #include "libavformat/avformat.h" int main(int argc,char *argv[]) av_register_all(); return 1; With gcc main.c -o main.o, an error occurs: undefined reference to 'av_register_all' Building with: gcc main.c -o main.o -lm -ld -lz -lavcodec -lavformat -lavutil, another error occurs: /usr/bin/ld: cannot find -ld How can I resolve (...)
• 17:18
  Animated watermark moving on the edges of the movie - ffmpeg - saeid ezzati Newest 'ffmpeg' Questions - Stack Overflow
  I wanna overlay a picture on a video, as a watermark. How do I insert an animated watermark that randomly moves from side to side. For example, A watermark, placed on top/ upper-left corner, moves randomly to the top/upper-right corner and freezes there for five seconds before moving down to the lower- right corner. I don't want the watermark to have a cross movement and move from the upper-right corner to the lower-left corner. Here is an example of my code, using which the watermark randomly jumps to a corner each 200 frames without (...)
• 16:40
  Libav linking error: undefined references - Fedech Newest 'ffmpeg' Questions - Stack Overflow
  Here's my problem: I built ffmpeg from source (version 1.2), the libav* libraries are in /usr/local/lib and they're static I'm compiling a ns3 (www.nsnam.org) module, so my only control over the linker is through the env variable LINKFLAGS In the source the headers are in a "extern C" block, so it's not the usual g++ name mangling I set LINKFLAGS="-I/usr/local/include/libavformat -I/usr/local/include/libavcodec -I/usr/local/include/libavutil -L/usr/local/lib -lavformat -lavcodec -lavutil", and the linker can't seem to find any (...)
• 15:08
  PHP convert any video to MP4 using ffmpeg - Dilak Newest 'ffmpeg' Questions - Stack Overflow
  I have a website in which I allow users to upload videos. But with the HTML5 tag video, only MP4 videos are allowed So, I want to convert any type of videos that the users upload to MP4 and then add the path in my database. I tried something, changing the file extension to MP4 but it didn't work. I've read something about ffmepg but I can't figure out how to use it. Here is my PHP script where I change the file extension and then add the path in my data base, please how can I convert the video correctly, what should I add/change? <?php  (...)
• 02:34
  How do I record a Selenium Grid Session (Via VNC, Remote Frame Buffer - RFB) to an H264 encoded MP4 [closed] - Frobbit Newest 'ffmpeg' Questions - Stack Overflow
  When my integration tests fail, I want to be able to watch the video of the test running. I test a full stack app with docker-compose and I use the single container Selenium-grid. If I save every Secenerio to a file, I can quickly review a failed test. I'm trying to record a Selenium Grid session and save it as an MP4 file using GStreamer and VNC. I need a solution that captures the VNC session running in the Selenium Grid container and writes the output to an H264 encoded mp4 file. Here's the context: I'm using Selenium Grid with a VNC server running in the (...)

24 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:48
  Ducking music using FFmpeg - angel_30 Newest 'ffmpeg' Questions - Stack Overflow
  I want to duck a music audio with a speech audio using FFmpeg (ducking is commonly used to lower background music anytime a person speaks, then raises it when that person finishes speaking). How can I do it with FFmpeg or any other tools (if any)? There was an FFmpeg filter called sidechaincompress which merges the two, but it doesn't "duck" them. It takes 2 audio inputs, 1st input to be compressed depending on the signal of 2nd input and later compressed signal to be merged with 2nd input: ffmpeg -i main.flac -i sidechain.flac -filter_complex (...)

23 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:04
  Encoding problem with x264 and not divisible by 4 resolutions - Valentin Maschenko Newest 'ffmpeg' Questions - Stack Overflow
  I'm encoding frames using H264 from BRGA to Yuv420p with high preset. It works fine with most resolutions, but images on 1366x768 are heavily distorted. So far, I've found that if width or height is not divisible by 4, there can be issues like this. Do you know how I can fix that? Code: stride = this.width * 4; encoder = new CodecContext(Codec.FindEncoderById(AVCodecID.H264)) Width = this.width, Height = this.height, Framerate = new AVRational(1, framerate), TimeBase = new AVRational(1, framerate), PixelFormat = (...) --
• 13:37
  Display stream with FFmpeg, python and opencv - Ηλίας Κωνσταντινίδης Newest 'ffmpeg' Questions - Stack Overflow
  Situation : I have a basler camera connected to a raspberry pi, and I am trying to livestream it's feed with FFmpg to a tcp port in my windows PC in order to monitor whats happening in front of the camera. Things that work : I manage to set up a python script on the raspberry pi which is responsible for recording the frames, feed them to a pipe and streaming them to a tcp port. From that port, I am able to display the stream using FFplay. My problem : FFplay is great for testing out quickly and easily if the direction you are heading is correct, but I want to (...)

22 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:16
  How to fix fps (stream? container? - wrong value) in mov file - using ffmpeg [closed] - rgr Newest 'ffmpeg' Questions - Stack Overflow
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mov': Metadata: major_brand : qt minor_version : 512 compatible_brands: qt encoder : Lavf61.9.106 Duration: 00:02:29.98, start: 0.000000, bitrate: 2622795 kb/s Stream #0:0[0x1]: Video: prores (HQ) (apch / 0x68637061), yuv422p10le(progressive), 3840x2160, 2622789 kb/s, 59.95 fps, 59.94 tbr, 60k tbn (default) --------- Metadata: handler_name : VideoHandler vendor_id : FFMP encoder : Lavc60.37.100 prores_ks How can I fix this value (59.95 fps) in a mov file? (...)

21 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:35
  FFMPEG says MP3 file is longer than it actually is [closed] - badr2001 Newest 'ffmpeg' Questions - Stack Overflow
  I have a mp3 file which is 01:04:09 seconds long. When I use the following commmand: ffmpeg -i TestAudio_123.mp3 -ss 60 -to 120 -c:a libmp3lame -q:a 2 output.mp3 I get this output in the console: Input #0, mp3, from 'TestAudio_123.mp3': Metadata: major_brand : M4A minor_version : 0 compatible_brands: M4A isommp42 voice-memo-uuid : 07BF4A32-29E8-4A28-89D5-B6676F9CB945 title : تسجيل جديد ٣٨ encoder : Lavf61.1.100 Duration: 01:07:22.01, start: 0.023021, bitrate: 32 kb/s Stream #0:0: Audio: mp3 (mp3float), 48000 Hz, mono, fltp, 32 (...) --
• 10:08
  Matplotlib saved animation has compression artifacts after ffmpeg update [closed] - DIgg Newest 'ffmpeg' Questions - Stack Overflow
  I am using matplotlib.animation.FuncAnimation.save to produce .mp4 animation files. I have recently updated the ffmpeg package, but now it causes ugly compression artifacts to appear in the generated videos. I have solved my issue by rolling back to the old version of the ffmpeg package, but maybe someone can suggest a proper solution or advise me where to report this issue. ffmpeg 6.1.1 produces videos with the artifacts. ffmpeg 4.2.2 produces videos without the artifacts. I am using matplotlib 3.10.0, numpy 2.1.3, python (...)
• 22:02
  Twilio Real-Time Media Streaming to WebSocket Receives Only Noise Instead of Speech - dannym25 Newest 'ffmpeg' Questions - Stack Overflow
  I'm setting up a Twilio Voice call with real-time media streaming to a WebSocket server for speech-to-text processing using Google Cloud Speech-to-Text. The connection is established successfully, and I receive a continuous stream of audio data from Twilio. However, when I play back the received audio, all I hear is a rapid clicking/jackhammering noise instead of the actual speech spoken during the call. Setup: Twilio sends inbound audio to my WebSocket server. WebSocket receives and saves the raw mulaw-encoded audio data from Twilio. The audio is processed via (...)
• 21:06
  Is there a way to pipe the stdio stream with the output segment ts files during m3u8 from mp4 conversion in ffmpeg with nodes spawn function? - Jacob L Newest 'ffmpeg' Questions - Stack Overflow
  I am writing an automated pipeline in Node-JS that takes an MP4 file, compresses it, then returns the buffer of the compressed file, feeds it into another FFmpeg command, which then converts the mp4 to .m3u8 for HLS. The problem I’m having is that I am not able to pipe the segment file data stream to automatically upload each .ts file to the cloud versus having them stored to the disk (which is not an option because this is a cloud function). I either have to opt in to them being created in memory in the directory, which then my manifest file is based off of, or I create one (...)
• 12:08
  FFmpeg | Option loop not found - Praveen Tamil Newest 'ffmpeg' Questions - Stack Overflow
  The loop option is not working with gif image. When I'm working with png image the code good. But when I'm working with animated gif image the error is thrown Option loop not found. In my example I'm trying to create the video from input image with specific duration. ffmpeg -loop 1 -t 5 -i 15324210315b56e3a78abe5.png -i watermark.png -filter_complex "[0]scale=trunc(iw/2)*2:trunc(ih/2)*2[v];[v][1]overlay=x=(W-w-10):y=(H-h-10)" output.mp4 Below command is not working ffmpeg -loop 1 -t 5 -i 15323488345b55c9a2b2908.gif -i (...)
• 10:43
  Optimally using hevc_videotoolbox and ffmpeg on OSX - Brajesh Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg 4.3.1 to convert videos from h264 to h265 and initially I was excited to discover that I can use my Mac's GPU to speed up the conversion with the flag hevc_videotoolbox. My Mac hardware is the 10th generation Intel i5 with AMD Radeon Pro 5300 I'm using this command: ffmpeg -i input_h264.mp4 -c:v hevc_videotoolbox -b:v 6000K -c:a copy -crf 19 -preset veryslow output_h265.mp4 The conversion speeds increased from 0.75x to 4x, almost a 500% improvement ! But then I noticed large filesizes and slightly fuzzy results. Then I noticed (...)
• 10:12
  av_guess_format return null - Iva Newest 'ffmpeg' Questions - Stack Overflow
  I used example from http://cekirdek.pardus.org.tr/~ismail/ffmpeg-docs/output-example_8c-source.html : out_ctx = avformat_alloc_context(); out_ctx->oformat = av_guess_format(NULL, filename, NULL); if (out_ctx->oformat == NULL) out_ctx->oformat = av_guess_format("mpeg4", NULL, NULL); if (out_ctx->oformat == NULL) LOGI(1, "Could not guess output format\\n"); exit(1); av_guess_format always return null. I don't understand what I must re-configured in FFMPEG for enable any (...) -- http://cekirdek.pardus.org.tr/~ismail/ffmpeg-docs/output-example_8c-source.html
• 09:25
  MP4 cut with ffmpeg doesn't play nicely in VLC but does in Browser - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I cut a video with ffmpeg: ffmpeg -ss 2 -to 10 -i src.mp4 -c copy out.mp4 But the playback in VLC is choppy for the first few seconds. Strangely it does play in my browser fine. I saw this post: https://superuser.com/questions/1167958/video-cut-with-missing-frames-in-ffmpeg?newreg=1502e1698e0344acb214aa8d7e6048bd where the suggestion is to use -avoid_negative_ts make_zero. That does fix the playback in VLC. I think that shifts the whole stream, and results in the video being longer than I want it to be. For my use case I need the video to be precisely the (...)
• 01:07
  ffmpeg - How to combine overlapping clips from single video? - anon Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use ffmpeg to take a few clips from a video and combine them together, similar to this: Cut multiple parts of a video with ffmpeg Except that the clips come from timestamps that overlap. My command looks like this: "C:\\Program Files\\ffmpeg\\bin\\ffmpeg.exe" -y -i "C:\\temp\\5min.mp4" ^ -vf "select='between(t,4,6.5)+between(t,5,6)', setpts=N/FRAME_RATE/TB" ^ -af "aselect='between(t,4,6.5)+between(t,5,6)', asetpts=N/SR/TB" "C:\\temp\\5min-clip.mp4" The video that I get only contains the first clip. I am on the latest (...)

20 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:25
  ffmpeg throws error "Invalid file index 1 in filtergraph description" when used with concat and -/filter_complex [closed] - Ernst V Newest 'ffmpeg' Questions - Stack Overflow
  I want to create mp4 videos from many small .jpg files (time-lapse). Each image is shown for 2 seconds and then fades to the next. This works fine when I issue the command with a few images (see below). But when the number of images reaches hundreds or thousands, I can no longer put them into a single command, but have to put the filenames and the complex filter into .txt files. Whatever I try, I always get the error "Invalid file index 1 in filtergraph description". This works fine: ffmpeg -loop 1 -i "image1.jpg" -loop 1 -i "image2.jpg" -loop 1 -i "image3.jpg" -loop 1 -i (...)

19 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:44
  FFmpeg streaming stuck few minutes after start [closed] - josue ramirez Newest 'ffmpeg' Questions - Stack Overflow
  Sorry for my english! :D I'm trying to make a live video stream from my webcam with ffmpeg using Node. I get the images or frames from ffmpeg via pipe1 on the stdout event and send them via a socket-io client to my angular app to play the stream. So far the stream starts fine and my angular app can play it fine, but after a certain time (8 minutes or so) ffmpeg stops sending data and the stream in my angular app stops and if I want to start the webcam again it's not possible anymore because it's apparently occupied by another process. I've been trying to (...)
• 19:22
  How to watermark with overlay fadeout with ffmpeg [closed] - Kevin Waterson Newest 'ffmpeg' Questions - Stack Overflow
  I wish to put a watermark on my video, and a text overlay. The text overlay should fade out after the first three seconds. The watermark is permanent. This is what I have come up with, however, the watermark seems to push the overlay down. ffmpeg -y -i in.mp4 -i images/watermark.png -filter_complex "[0:v][1:v]overlay=10:10[bg];[bg]drawtext=fontfile=fonts/SAMAN___.ttf:text='Testing':box=1:boxborderw=800|800:boxcolor=black:fontsize=40:fontcolor=white:alpha='if(lt(t,2),0,if(lt(t,3),(t-2)/1,if(lt(t,6),1,if(lt(t,7),(1-(t-6))/1,0))))':x=(w-text_w)/2:y=(h-text_h)
• 19:50
  FFmpeg: high quality animated GIF? - David Hope Newest 'ffmpeg' Questions - Stack Overflow
  I'm generating animated a GIF from a video on my server. The generated GIF is not really high quality and it looks like the pixels are huge. Example: This is how I generate the GIF: shell_exec("/usr/bin/ffmpeg -i video.mkv -vf scale=500:-1 -t 10 -r 10 image.gif"); I did a search on Google and came across this: shell_exec("/usr/bin/ffmpeg -i video.mkv -r 20 -f image2pipe -vcodec ppm - | convert -delay 5 - output.gif"); But the command above doesn't do anything and no output.gif is being (...) --
• 14:02
  Download HLS ( HTTP ) Stream video using python - LeDerp Newest 'ffmpeg' Questions - Stack Overflow
  I need to download a streaming video(from a URL) using python the command line argument would be: ffmpeg -i URL stream.mp4 I know I can use the subprocess command subprocess.call('ffmpeg -i '+ URL +' stream.mp4', shell=True) Is there any alternative like a API that I can use instead of using subprocess command
• 13:41
  How to split an audio / video file based upon multiple timestamps by using FFMPEG (preferably) - badr2001 Newest 'ffmpeg' Questions - Stack Overflow
  I would like to be able to split my audio (mp3 or equiv.) or video file based upon multiple timestamps. The same way, for those who have used any editing software, you can crop the file based upon selecting a start time and end time. What I have done so far: [HttpPost] public async Task ProcessFullAudio([FromBody] ProcessFullAudioRequest processFullAudioRequest) if (processFullAudioRequest == null || processFullAudioRequest.StartEndTimes == null || processFullAudioRequest.StartEndTimes.Length == 0) throw new ArgumentException("Invalid request: (...)
• 11:29
  Extract undecoded audio payload from song file? - Gabriel Newest 'ffmpeg' Questions - Stack Overflow
  What tools are available to extract the raw undecoded audio payload from a song file? I am looking for a solution that will work on wma, m4a, mp3, and ogg files. One of the purposes is to be able to calculate the md5sum of the audio payload. I tried ffmpeg -i -f md5 - but this actually does a decoding pass which is not desired. Also this seems to produce different results depending on the versions of the decoders in use. I tried ffmpeg -i -acodec copy - > but ffmpeg complains that it does not know the desired output format even though copy is (...) -- documentation
• 11:28
  How can i create a stable checksum of a media file? - yawniek Newest 'ffmpeg' Questions - Stack Overflow
  how can i create a checksum of only the media data without the metadata to get a stable identification for a media file. preferably an cross platform approach with a library that has support for many formats. e.g. vlc, ffmpeg or mplayer. (media files should be audio and video in common formats, images would be nice to have too)
• 03:11
  How can a desktop node.js app play audio that may be controlled by the user like a media player? [closed] - eedefeed Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a playlist manager that plays music. How can Node.JS play audio files quickly, reliably and with all the basic level features you would expect from a media player, namely: play pause seek stop adjust volume I'm targetting windows/linux, but a Windows-only solution but be okay (for now.) I have tried a number of libraries and methods to play audio but it seems none of them are good enough: Audic: it's reasonably good, but buggy. The play and pause functions sometimes get switched around. I also recall that there (...) -- Speaker, fluent-FFmpeg, fluent-FFmpeg-util, Node Vlc, VLC Client, sound play
• 01:41
  How to Identify the Version of ffmpeg.dll in WebView2 Runtime Fixed Version - Po-Sen Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using the WebView2 runtime fixed version. After expanding the package, I found multiple DLL files, including ffmpeg.dll. In the file properties, the file version is displayed as 0.0.0.0, and the only version-related information I can see is the product version: git-2024-04-25-e3581fa2dd. This format is different from the numeric versioning scheme I see on the official FFmpeg website: https://ffmpeg.org/download.html#releases. I want to trace the exact FFmpeg version used in this WebView2 distribution. Initially, I assumed e3581fa2dd was a Git (...) -- , https://ffmpeg.org/download.html#releases, , https://git.ffmpeg.org/ffmpeg.git

18 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:34
  Run docker container with FFMPEG rstp stream on websockets - bmvr Newest 'ffmpeg' Questions - Stack Overflow
  I have create a node js application that uses ffmpeg with spawn node library. Here's the backend sample: const startStreamWs = (cameraId, rtsp_url) => console.log(`Starting stream for camera: $cameraId`); const ffmpeg = spawn("ffmpeg", [ "-rtsp_transport", "tcp", // Use TCP for reliable streaming "-i", rtsp_url, "-analyzeduration", "5000000", // Increase analyzeduration "-probesize", "5000000", // Increase probesize "-fflags", "nobuffer", // Reduce buffering "-flags", "low_delay", // Low latency "-strict", (...)
• 14:06
  When decoding video with ffmpeg and playing the decoded audio data with SDL2, it's all noise [closed] - jodan feng Newest 'ffmpeg' Questions - Stack Overflow
  it is the code in the main thread int main(int argc, char *argv[]) QApplication a(argc, argv); Ffplay f; f.start(); return a.exec(); Ffplay is the thread that decode the video and play it class Ffplay : public QThread Q_OBJECT public: Ffplay(); protected: void run() override; public: AVFormatContext* format2; Thread2 t2; ; Ffplay::Ffplay() void Ffplay::run() format2=avformat_alloc_context();  (...)
• 02:34
  How to hide console output of FFmpeg in Python? - Shiven Saini Newest 'ffmpeg' Questions - Stack Overflow
  I was working on a YouTube video downloader Python program. I want to encode downloaded data to other media formats for this job i used FFmpeg and FFmpeg-Python (Package to use FFmpeg in Python). Everything is Fine but i want to ask that how can i disable FFmpeg Output on the console ? Here is some Pic of my Program :- But this console often appears when my program starts encoding, suppressing the main GUI :- If you know any solution for my problem then please give me some solution. It is my first time that i am trying Stackoverflow for my (...) -- ,

17 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:49
  macos - Batch create 'samples' with multiple cuts from videos [closed] - Thiago Newest 'ffmpeg' Questions - Stack Overflow
  I'm on macOS, and have ffmpeg and python installed through homebrew. Bash solutions are also welcome - though I have no experience with bash I have folders with many videos, most (if not all) in either mp4 or mkv. I want to generate quick samples for each video, and each sample should have multiples slices/cuts from the original video. I don't care if the resulting encode, resolution and bitrate are the same as the original, or if it's fixed for example: mp4 at 720. Whatever is easier to write on the script or faster do execute. Example result: folder has 10 (...) -- https://youtu.be/FZC3aIvugpI
• 15:35
  Cloud Functions for Firebase: completing long processes without touching maximum timeout - Scott Ewing Newest 'ffmpeg' Questions - Stack Overflow
  I have to transcode videos from webm to mp4 when they're uploaded to firebase storage. I have a code demo here that works, but if the uploaded video is too large, firebase functions will time out on me before the conversion is finished. I know it's possible to increase the timeout limit for the function, but that seems messy, since I can't ever confirm the process will take less time than the timeout limit. Is there some way to stop firebase from timing out without just increasing the maximum timeout limit? If not, is there a way to complete time (...) -- I have a code demo here that works, seen here
• 10:57
  FFmpeg Android Errors - axjp Newest 'ffmpeg' Questions - Stack Overflow
  Ok so im making a kotlin android app and for file conversion from 3gp to wav i added the android ffmpeg library with implementation 'com.arthenica:mobile-ffmpeg-full:4.4' then i added this code to convert the files FFmpeg.execute("-i" + f2 +"/storage/emulated/0/Android/data/com.icompilecodewithnowarnings.ffmpegthing/files/Documents/recording.wav") for further context f2 is /storage/emulated/0/Android/data/com.icompilecodewithnowarnings.ffmpegthing/files/Documents/recording.3gp The error log is to large to simply just fit here but heres some of it Execution (...)
• 07:33
  FFMPEG Audio Not Working Using VideoShow Package - dev.skas Newest 'ffmpeg' Questions - Stack Overflow
  I am creating a Node.js app that make video. I am facing some audio issue for each image, but my background sound is working async function generateVideo() const images = []; for (let i = 0; i < conversation.length; i++) images.push( path: `assets/image/conversation$i.png`, duration: 5, caption: questions[i].question, audio: `assets/audio/conversation$i.mp3`, ); // Show question for 5 sec images.push( path: `assets/image/reply$i.png`, duration: 5, audio: `assets/audio/reply$i.mp3`, ); (...)
• 04:39
  ffmpeg unable to get duration/bitrate of remote gif - Peter Xia Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get the duration of a gif. The command ffmpeg -i https://cdn.7tv.app/emote/01F6MZGCNG000255K4X1K7NTHR/4x.gif gives Duration: N/A, start: 0.000000, bitrate: N/A However if i download the file and pass it in ffmpeg -i 4x.gif it gives: Duration: 00:00:07.92, start: 0.000000, bitrate: 1225 kb/s The issue seems limited only to gifs on 7tv site. It works for other sites. (example: ffmpeg -i https://c.tenor.com/ULCY5B996-oAAAAd/tenor.gif). It also works for other encodings of that image (exmaple ffmpeg -i (...)

16 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:19
  ffmpeg exit code 429496724 when opening file with in name - Holly Wilson Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to write a program that will read the names of files in a directory, and parse them for info which it will then write into that file's metadata (seems pointless, I know, but it's more of a trial run for a larger project. If I can figure this out, then I'll be ready to move on to what I actually want to do). All of my filenames are formatted: Title, Article* - Subtitle* Cut* [Year] *if present The four test videos I'm using are titled: Test Video 1 [2000] Test Video 2, A [2000] Test Video 3 Test Cut [2000] Test Video (...)
• 17:40
  How to fix the ffmpeg python issue "Error applying option 'original_size' to filter 'ass': Invalid argument"? - Gauthier Buttez Newest 'ffmpeg' Questions - Stack Overflow
  ENVIRONMENT: Python 3.10 Windows 11 ffmpeg-python==0.2.0 CONTEXT: I am trying to add hardcoded subtitles on a video with ffmpeg and Pyton. PROBLEM: ffmpeg is not able to find the path of my ass subtitle file. So I tried different ways with different methods. I asked different AI to try to find a solution. Impossible! It is such a crazy issue that I tested the code from a "test" folder located on the root "C:" from the command line wid nows. No AI was able to fixed this issue. I tried chatGPT, deepseek, claude.ai. They proposed different solutions which (...) -- https://github.com/gauthierbuttez/public/blob/master/output_ffmpeg.log, https://github.com/gauthierbuttez/public/blob/master/test.zip
• 19:00
  How to seamlessly concatenate multiple Opus files together without popping sound? - Gurdie Derilus Newest 'ffmpeg' Questions - Stack Overflow
  I have a large PCM file that I've split into N chunks (N being the # of threads), and I encode them in parallel into Opus files with FFmpeg. Note: All PCM files are 16-bit Little Endian, 2 channels, 48000 sample rate. I then concatenate the Opus files using FFmpeg's demuxer, but I can hear an audible pop sound between each segment. Opening this sample file in Audacity reveals the issue: Notice the introduced pops in opus I created a simple and short Golang project on Github with a sample PCM file for easy testing. Note, not production code, so obviously (...) -- sample file, Notice the introduced pops in opus, Golang project on Github, Concatted Opus files vs Separate Opus files
• 10:03
  Split a video with ffmpeg, without reencoding, at timestamps given in a txt file - Basj Newest 'ffmpeg' Questions - Stack Overflow
  Let's say we have a video input.mp4, and a file split.csv containing: start;end;name 00:00:27.132;00:07:42.422;"Part A.mp4" 00:07:48.400;00:17:17.921;"Part B.mp4" (or I could format the text file in any other format, but the timestamps must be hh:mm:ss.ddd) How to split the MP4 into different parts with the given start / end timestamps, and the given filename for each part? Is it possible directly with ffmpeg, and if not with a Python (...)
• 08:51
  Python ffmpeg won't accept path, why? - Messaoud dhia Newest 'ffmpeg' Questions - Stack Overflow
  everytime i launch the code and set the correct path it gives me this error, I tried including ffmpeg path, uninstalling and installing the library back but no luck. I've also tried using diffrent ways to set the path like putting it directly without saving it to a variable, this is getting me crazy please help me with a solution . Code from pytube import * import ffmpeg global str userurl = (input("Enter a youtube video URL : ")) q = str(input("Which quality you want ? 360p,480p,720p,1080p,4K,Flh :")).lower() yt = (...)

15 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 07:29
  Convert 720p Mp4 to 480p with php ffmpeg - Parm Dhillon Newest 'ffmpeg' Questions - Stack Overflow
  I need to covert 720p or 1080p video to 480p mp4 video , i found below code ffmpeg -i input -vf scale=-1:480 -vcodec mpeg4 -qscale 3 output.mp4 and please help me , i am unable to give it INPUT VIDEO ex. $video='/path/to/mp4/video'; exec('ffmpeg -i $video -vf scale=-1:480 -vcodec mpeg4 -qscale 3 output.mp4'); why above code is not working
• 04:21
  How to merge segmented webvtt subtitle files and output a single file? - Dobbelina Newest 'ffmpeg' Questions - Stack Overflow
  How to merge a segmented webvtt subtitle file and output a single file?, m3u8 looks like this example: #EXTM3U #EXT-X-VERSION:4 #EXT-X-PLAYLIST-TYPE:VOD #EXT-X-MEDIA-SEQUENCE:1 #EXT-X-INDEPENDENT-SEGMENTS #EXT-X-TARGETDURATION:4 #USP-X-TIMESTAMP-MAP:MPEGTS=900000,LOCAL=1970-01-01T00:00:00Z #EXTINF:4, no desc 0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-1.webvtt #EXTINF:4, no desc 0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-2.webvtt #EXTINF:4, no (...) -- https://cmoreseusphlsvod60.akamaized.net/vod/bea44/0ghzi1b2cz5(11792107_ISMUSP).ism/0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-15.webvtt

14 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 03:51
  Using swr_convert to resample audio frames resulted in audio with significant noise [closed] - Bruce Hu Newest 'ffmpeg' Questions - Stack Overflow
  I attempted to use swr_convert to resample audio frames from 44100 Hz to 16000 Hz, processing the frames one by one for testing purposes. However, the resulting audio appears to be mixed with noise. The following code shows how I resample a single audio frame: AVFrame* output_frame = av_frame_alloc(); if (!output_frame) throw std::runtime_error("Failed to allocate output AVFrame"); AVRational output_time_base = 1, output_sample_rate; SwrContext* swr_ctx = swr_alloc(); if (!swr_ctx) av_frame_free(&output_frame); throw (...)
• 21:37
  ffmpeg: how to prevent wait in case of error - xrfang Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to add watermark to images/videos, using the following command line: ffmpeg -y -f mjpeg -i input -i /tmp/watermark.png -filter_complex "..." -f mjpeg output The problem is, in case the input file is not a jpeg file, the process will HANG instead of quit with an error: Press [q] to stop, [?] for help [mjpeg ⓐ 0x126dc60] dqt: len 28602 is too large Error while decoding stream #0:0: Invalid data found when processing input frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A In my situation, the file has no (...)
• 16:28
  How to extract the 1st frame and restore as an image with ffmpeg? [closed] - lex Newest 'ffmpeg' Questions - Stack Overflow
  Anyone knows the trick? And how to install ffmpeg ? yum install mpeg only returns this: ======================================================================================== Matched: mpeg ======================================================================================== libiec61883.i386 : Streaming library for IEEE1394 libiec61883.x86_64 : Streaming library for IEEE1394 qffmpeg-devel.i386 : Development package for qffmpeg qffmpeg-devel.x86_64 : Development package for qffmpeg qffmpeg-libs.i386 : Libraries for qffmpeg qffmpeg-libs.x86_64 (...)
• 00:00
  What tool can I use to analyze audio and clip webm files? [closed] - Phillip Feldman Newest 'ffmpeg' Questions - Stack Overflow
  I have a bunch of 2-3 hour long podcast webms from Youtube. I want to extract the audio from them, and programmatically analyze things like volume, or who's speaking. I then want to use my analysis to clip the original webms. What tools can I use to do this, and is size of the audio files something that I need to consider? I know python and have used ffmpeg.
• 19:03
  I am trying to append the video segments to an existing video segment file, so that multiple videos can be streamed at once. How to achieve it? - Prafulla Nayak Newest 'ffmpeg' Questions - Stack Overflow
  Here is what I do: Fetch the existing m3u8 file Generate the segments to the new video file. fetch old segments from the m3u8 file and combine the new segments details. and then add it in between under "mergedSegments" as mentioned below. #EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:10 #EXT-X-MEDIA-SEQUENCE:$newMediaSequence #EXT-X-PLAYLIST-TYPE:VOD $mergedSegments #EXT-X-ENDLIST While doing so, everything works fine. But when I play it, The 1st video gets played without skipping any segments. But (...)

13 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:00
  ffmpeg mp4 to hls transcode fails on Azure Windows Server Image [closed] - James Weatherhead Newest 'ffmpeg' Questions - Stack Overflow
  I am having an issue with transcoding an mp4 (any mp4) to hls. If I run the command below on my Windows 11 machine it works fine. If I run it on a clean Windows 11 VM, it works fine. If I run it on a clean Windows 2022 Server VM it works fine. If I create a Windows 2022 server image in Azure and run it... it fails (see error below) I feel like something that FFMPEG needs is missing from the default server image in Azure. Has anyone experienced this issue and found a way to solve it? The command I am using: ffmpeg.exe -i LowPriVMs-1.mp4 -filter_complex "[0:v]split=1[v1]; (...)
• 17:31
  Error "Transparency encoding with auto_alt_ref does not work" when converting a .mov with Alpha to .webm with alpha with ffmpeg [closed] - ThomTTP Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a .mov file with alpha transparency into a .webm file and have been following this thread for help: Convert mov with Alpha to VP9 Webm with Alpha Using ffmpeg The command line I have been using is ffmpeg -r 24/1 -i Desktop/Skel_Walk_1.mov -c:v libvpx -pix_fmt yuva420p Desktop/Skel_Walk_1.webm However when I go to run the command it comes up with 2 errors Transparency encoding with auto_alt_ref does not work and Error initializing output stream 0:0 -- Error while opening encoder for output stream (...)
• 19:12
  Eleven Labs API not working, is ffmpeg not installed properly? - Daniel Masso Pardo Newest 'ffmpeg' Questions - Stack Overflow
  Traceback (most recent call last): File "C:\\Users\\danim\\OneDrive\\Desktop\\programming\\APItests.py", line 9, in play(audio) File "C:\\Users\\danim\\PycharmProjects\\EXAM\\venv\\lib\\site-packages\\elevenlabs\\utils.py", line 25, in play raise ValueError(message) ValueError: ffplay from ffmpeg not found, necessary to play audio. On mac you can install it with 'brew install ffmpeg'. On linux and windows you can install it from https://ffmpeg.org/ I keep getting this error, and yes, I've gone to the web site and installed, made a path "C:\\Users(my (...)
• 15:04
  How to reinitialize AVCodec with updated AVCodecContext on fly - Alemao Newest 'ffmpeg' Questions - Stack Overflow
  There is a question about an old (0.7) version of the FFMPEG(LibAV) library, including to my project as extern "C" #include #include #include #include #include #include I have an AVCodec object, which knows how to encode my frames(to H264 codec). I have an object of AVCodecContext type, initialized with the parameters that I need (bitrate, framerate etc.). AVCodec *encoderVideoCodec = nullptr; AVCodecContext *encoderVideoCodecContext = nullptr; Then I initialize AVCodec with its context, setting some important (...) -- AVCodec
• 09:55
  Converting audio/video tracks to AAC format in C# app - Alex1347 Newest 'ffmpeg' Questions - Stack Overflow
  I try convert audio/video tracks to AAC format using qaac lib. In CMD it works and output information about progress of convertation. In my C# app it works too, but I can't get information about progress, i try use these events: OutputDataReceived, ErrorDataReceived. In handler of ErrorDataReceived I don't get needed information, in handler of OutputDataReceived I get received.Data like null value. How can I get conversion progress information during conversion in C# code? (I use qaac lib because ffmpeg lib convert tracks to AAC incorrect - incorrect duration of result (...) -- qaac

12 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:17
  How to disable slf4j log in java - Model123123 Newest 'ffmpeg' Questions - Stack Overflow
  Sorry for my poor English. I'm using ffmpeg-cli-wrapper library in java [main] INFO net.bramp.ffmpeg.RunProcessFunction - .\\ffprobe.exe -version [main] INFO net.bramp.ffmpeg.RunProcessFunction - .\\ffprobe.exe -v quiet -print_format json -show_error -show_format -show_streams -show_chapters How to remove this log? try this: java.util.logging.Logger.getLogger("net.bramp.ffmpeg").setLevel(Level.OFF); /logger name="net.bramp.ffmpeg" level="OFF"/ in logback.xml but not work... RunProcessFunction (...) -- https://github.com/bramp/ffmpeg-cli-wrapper/blob/master/src/main/java/net/bramp/ffmpeg/RunProcessFunction.java
• 14:44
  Use FFmpeg in Visual Studio - box Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use FFmpeg in a C++ project in Visual Studio 2010. I want to include the libraries as statically linked files. Simple programs like libavcodec/api-example.c compile without error and no linker error appears in the error view when starting them. However, a message box shows up after starting the application, saying that avutil-51.dll is missing. Do you have any hints on how to fix that? I used the latest dev build from http://ffmpeg.zeranoe.com/builds/. Then I specified include as additional include directory, (...) -- libavcodec/api-example.c, http://ffmpeg.zeranoe.com/builds/
• 14:35
  FFmpegKitFlutter, Error: MissingPluginException(No implementation found for method ffmpegSession on channel flutter.arthenica.com/ffmpeg_kit) - 7Solomon Newest 'ffmpeg' Questions - Stack Overflow
  I Have this simple Flutter function, to compress Audio Files import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart'; import 'package:ffmpeg_kit_flutter/return_code.dart'; Future compressAudio(String inputPath) async try // ... final command = '-y -i "$inputPath" ' // Input file '-af "loudnorm=I=-16:TP=-1.5:LRA=11,' // Loudness normalization 'acompressor=threshold=$_config['threshold_db']:' 'ratio=$_config['ratio']:'  (...)

11 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:08
  ffmpeg sequence starting at frame 1001 - Kernowkid Newest 'ffmpeg' Questions - Stack Overflow
  I have an image sequence starting at 1001 that I'd like to convert to a mp4 using ffmpeg. Here's what I'm putting in cmd shell: ffmpeg -i plates_sh01_%04d.jpeg start_number 1001 -s 1920x1080 -vcodec libx264 -crf 25 -b:v 4M -pix_fmt yuv420p plates_sh01_%04d.mp4 This works for image sequences starting at frame numbers below 999. For any sequence starting at 1000 or above I get this error: Could find no file with path 'plates_sh01_%04d.jpeg' and index in the range 0-4 plates_sh01_%04d.jpeg_%04d.jpeg: No such file or directory I (...)
• 09:11
  After upgrade ffmpeg code doesn't working clip build - Tchoune Newest 'ffmpeg' Questions - Stack Overflow
  I have a problem after upgrading ffmpeg from 4.2.2 to 5.2.2, my code no longer works. When I upload a video to my React-Native application I get a file corruption error on my FFmpeg python agent. -> sends to Laravel which stores the video on the minio storage; the video is available -> sends http to the minio key to download locally the mp4 video is corrupted on the minio too... I have the impression that it's an error downloading the video locally that makes the video corrupt, but I have no idea how I can debug this problem. If I upload the video directly from my web (...)
• 04:06
  Split a video in two and burn subtitles into each output video - Kairei Newest 'ffmpeg' Questions - Stack Overflow
  I want to split a single input video "input.mp4" into two separate videos "out1.mp4" and "out2.mp4." I also want to burn hard subtitles into each of the output files. The subtitles come from two pre-existing subtitle files "subtitles1.ass" and "subtitles2.ass." I tried just adding -vf "ass=subtitles1.ass" and -vf "ass=subtitles2.ass" before each of the output files. Subtitles from subtitles1.ass were added to out1.mp4 but out2.mp4 had no subtitles. I spent hours reading docs and trying things and realized I probably need a complex filter and mapping so came up with this: ffmpeg.exe (...)
• 03:46
  FFMPEG: webm to mp4 quality loss - turboLoop Newest 'ffmpeg' Questions - Stack Overflow
  When trying to convert a .webm video (two colored animation) to a .mp4 video using ffmpeg (3.4.2 on mac) the result is somewhat blurry. I did research this topic and tried different approaches to solve this. Here is the most promising command: ffmpeg -i vidoe.webm -qscale 1 video.mp4 However, the quality change is still tremendous, see the difference below. webm mp4 The resolution of the two videos is the same, however the size dropped from 24,3MB (.webm) to 1,5MB (.mp4) after conversion.  (...) -- ,
• 01:42
  Output image with correct aspect with ffmpeg - koichirose Newest 'ffmpeg' Questions - Stack Overflow
  I have a mkv video with the following properties (obtained with mediainfo): Width : 718 pixels Height : 432 pixels Display aspect ratio : 2.35:1 Original display aspect ratio : 2.35:1 I'd like to take screenshots of it at certain times: ffmpeg -ss 4212 -i filename.mkv -frames:v 1 -q:v 2 out.jpg This will produce a 718x432 jpg image, but the aspect ratio is wrong (the image is "squeezed" horizontally). AFAIK, the output image should be 1015*432 (with width=height * DAR). Is this calculation correct? Is there a way (...)

10 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:59
  How can I build a custom version of opencv while enabling CUDA and opengl? [closed] - Josh Newest 'ffmpeg' Questions - Stack Overflow
  I have a hard requirement of python3.7 for certain libraries (aeneas & afaligner). I've been using the regular opencv-python and ffmpeg libraries in my program and they've been working find. Recently I wanted to adjust my program to use h264 instead of mpeg4 and ran down a licensing rabbit hole of how opencv-python uses a build of ffmpeg with opengl codecs off to avoid licensing issues. x264 is apparently opengl, and is disabled in the opencv-python library. In order to solve this issue, I built a custom build of opencv using another custom build of ffmpeg both (...)
• 21:24
  OpenCV & RTSP - Python errors - Midhun M Newest 'ffmpeg' Questions - Stack Overflow
  I’m working on a Python script that reads multiple RTSP streams using OpenCV, detects motion, and saves frames when motion is detected. Initially, I faced issues with ash-colored frames due to H.265 codec, which OpenCV doesn’t support by default. After switching the camera codecs to H.264, the ash-colored frames issue was resolved. However, I’m now encountering decoding errors and glitching frames. System Specifications: Processor: Intel Core i3-6100 CPU ⓐ 3.70GHz RAM:8GB Resource Usage: CPU: 35-45% RAM: 1GB max Network Speed: 7.4 Mb/s Disk Usage: 2.3 (...)
• 17:54
  ffmpeg - force_original_aspect_ratio=increase - stretches video height but not width [closed] - Rhys Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to concat 3 videos. But the middle video, is only stretching in height. test1.mp4 test2.mkv test3.gif Which have been encoded into mp4s with ffmpeg test1.mp4 Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, bt709, progressive), 720x1280 [SAR 1:1 DAR 9:16], 30 fps, 30 tbr, 90k tbn test2.mp4 Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, progressive), 538x662 [SAR 1:1 DAR 269:331], 30 fps, 30 tbr, 90k tbn test3.mp4 Stream #0:0[0x100]: Video: mpeg2video (...)
• 09:05
  How to timestamp video with seconds and milliseconds with ffmpeg? [closed] - JulianJ Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to timestamp an .mp4 video with seconds and milliseconds using ffmpeg. I can timestamp with hours, minutes, seconds and milliseconds using the code below but just can't figure out how to print seconds and milliseconds. ffmpeg -i input.mp4 -vf "drawtext=:text='%pts\\:s':rate=25:start_number=0:x=(w-tw)/2:y=h-(3*lh):fontcolor=white:fontsize=50,drawtext=:text='%pts\\:hms':rate=25:start_number=0:x=(w-tw)/2:y=h-(2*lh):fontcolor=white:fontsize=50" (...)
• 13:24
  SRT : No Room to Store Incoming Packets when we stream SRT streams through VLC - Shankar Newest 'ffmpeg' Questions - Stack Overflow
  Hope all you are doing well. Actually i was trying to stream a media file using VLC by SRT protocol. For which, srt-live-transmit is used as converter in between SRT Listener and VLC UDP streams. srt-live-transmit used to convert udp to srt streams(mpegts). But when i tried to do that, after few seconds, i got error in srt-live-transmit terminal that : No room to store incoming packet: What should be the reason for this error? And if anyone know anything about this problem, please share info. It would be helpful. Thank (...)
• 12:29
  PHP cannot run a python script that uses ffmpeg (when the python script runs in terminal) - dr3kiki Newest 'ffmpeg' Questions - Stack Overflow
  In my website, a user uploads an audio file that gets mixed by a python script. The python script uses ffmpeg to translate the files, however it doesn't work when I try executing via php due to ffmpeg, I get this error usr/local/lib/python3.9/site-packages/pydub/utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work") The python script can run (with no errors) in the Linux terminal and ffmpeg can run separately also in the terminal (in the (...)
• 07:04
  How to hide the output of yt-dl in CMD? python - Qais Albeaiz Newest 'ffmpeg' Questions - Stack Overflow
  I'm coding program that download mp3 audio from youtube videos but I have an issue that yt-dl show some output in console my code: with open('Links.txt') as f: content = f.readlines() for links in content: ydl_opts = 'format': 'bestaudio/best', 'postprocessors': [ 'key': 'FFmpegExtractAudio', 'preferredcodec': 'mp3', 'preferredquality': '192', ], with youtube_dl.YoutubeDL(ydl_opts) as ydl:  (...) --

9 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:08
  ffmpeg change framerate: Question about bitrate [closed] - schweigerson Newest 'ffmpeg' Questions - Stack Overflow
  Thanks to the forum, I successfully can reduce the frame rate of a video. ffmpeg -i input_50fps.mp4 -filter:v fps=25 output_25fps.mp4 Input and output have a similar bitrate as well as filzesize: File bitrate filesize input_50fps.mp4 2900kBit/s 1.9GB output_25fps.mp4 2528kBit/s 1.7GB Assumption: Divide the number of frames into half should both reduce the bitrate and the filesize accordingly (half the size). Question: Does it make sense to enforce the reduction of the (...)
• 18:46
  How to make multiple ffmpeg commands run in parallel [duplicate] - Kim Mỹ Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the following ffmpeg command to compress video: `nice -n 10 $ffmpegPath -i "$chunkPath" -c:v libx264 -preset fast -crf 28 "$compressedPath"` However, when I run two instances of ffmpeg of this command to achieve parallelism: Either in two child processes within a single Node.js application or in two separate Node.js applications running at the same time, it seems only one command is processed, and the other is skipped. I've noticed that 2 FFmpeg instances are loaded into RAM and both create a starting file for the final compressed video, they (...)
• 18:37
  Thread count option in FFmpeg for FASTEST conversion to h264? - S B Newest 'ffmpeg' Questions - Stack Overflow
  I need to maximize speed while converting videos using FFmpeg to h264 Any input format of source videos User's machine can have any number of cores Power and memory consumption are non-issues Of course, there are a whole bunch of options that can be tweaked but this question is particularly about choosing the best -thread option. I am trying to find an ideal thread count as a function of no. of cores input video format h264-friendly values maybe? anything else missed above? I am aware the default -thread 0 (...)
• 15:08
  RTSP Client for H264 Audio/Video Stream - Jean-Philippe Encausse Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking for a simple way to get data of an IP Camera RTSP Stream (using H264 Audio/Video) and get on the other side a frame by frame byte[] a stream of the audio After many research EmguCV Capture seems hanging forever (no answer from forum) There is many (too big) RTSP Server few decode H264 There is "slow" ffmpeg wrapper There is some managed DirectShow wrapper So I don't know where to go ? And how to do this ? It seems iSpyCamera is doing the job but it's a big project not a little (...) -- RTSP Server
• 12:25
  How to remove a specific segment from an audio file using timestamps? [closed] - Hilal Khan Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a C# project where I need to remove a specific segment from an audio file (e.g., WAV, MP3) based on start and end timestamps, while keeping the rest of the audio intact. For example, given a 20-minute audio file, I want to remove the section from 17:00 to 19:00 and be left with a new audio file containing only 0:00-17:00 and 19:00-20:00 (i.e., keeping the parts before and after the cut). I have used NAudio and FFmpeg to trim a file by cutting from the start or end, but I only get my desired snippet as a separate file which is not what I am looking for as I want (...)

8 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:29
  ffplay aevalscr concat not transitioning smoothly - mr.freeze Newest 'ffmpeg' Questions - Stack Overflow
  Given this ffplay command, I am expecting that the sine wave goes from 440hz to 454.4hz over 10 seconds then continue playing at 454.4hz for another 10 seconds. Instead, the transition is at different frequencies making it not smooth. What am I doing wrong? ffplay -f lavfi -i " aevalsrc='sin(2*PI*t*(440 + (14.4*t/10)))':s=44100:d=10[wave1]; aevalsrc='sin(2*PI*t*454.4)':s=44100:d=10[wave2]; [wave1]afade=t=in:st=0:d=5[wave1]; [wave2]afade=t=out:st=5:d=5[wave2]; [wave1][wave2] (...)
• 21:40
  Play video with multiple audio tracks - different languages to separate devices - Sandre Newest 'ffmpeg' Questions - Stack Overflow
  I want watch movie with my wife, listening to different audio channels - one language for me, another for my wife. I found solution and it works fine but not optimal. I know nothing about audio conversion, so asking to make it better. I'm using ffmpeg to combine separate stereo tracks to 5.1, then playing using IINA to Agregate device defined in Audio MIDI Setup (Speakers and bluetooth headphone). This for MacOS, but I'm pretty sure something similar will work for windows, taking in count IINA under hood use MPV. ffmpeg -i eng.mp3 -filter_complex (...) --
• 18:30
  How to Remove a Specific Segment from an Audio File Using Timestamps in C#? [closed] - Hilal Khan Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a C# project where I need to remove a specific segment from an audio file (e.g., WAV, MP3) based on start and end timestamps, while keeping the rest of the audio intact. For example, given a 20-minute audio file, I want to remove the section from 17:00 to 19:00 and be left with a new audio file containing only 0:00-17:00 and 19:00-20:00 (i.e., keeping the parts before and after the cut). I have used NAudio and FFmpeg to trim a file by cutting from the start or end, but I only get my desired snippet as a separate file which is not what I am looking for as I want (...)
• 14:39
  How do I combine videos with ffmpeg with delay? - Isaiah Barrier Newest 'ffmpeg' Questions - Stack Overflow
  I have 44 videos that are all encoded the same and have the same dimensions, and they all have audio. I want to combine all of them with a 0.5 second pause between them in ffmpeg. How do I do that? The command I used that combines them without delay is ffmpeg -f concat -safe 0 -i fl.txt -c copy -map 0 output.mp4
• 14:27
  why does ffmpeg export black video? - Sling Ring Newest 'ffmpeg' Questions - Stack Overflow
  i give ffmpeg a simple task which is the following ffmpeg -i test.avi -c:v rawvideo -pix_fmt yuv420p out.yuv i try to play the video but it gives a black screen, even in a .yuv player. ffmpeg supposedly "running" Is there some human error that i am doing? Signed Slingring -- ffmpeg supposedly "running"
• 13:30
  Python Discord Music Bot: Playing next song while current song is playing - Deltrac Newest 'ffmpeg' Questions - Stack Overflow
  I've been working on a Discord bot and got it working 90% of the time. On some occasions, the bot will be playing a song and it will stop playing and just move to the next song. My assumption is that it's because of how I am handling my play command and the play_next command as well. I've tried to re-arrange the code, change functionality, etc. without success. Here are the two commands: ⓐclient.command(name="p") async def play(ctx, *, search_query: str): global bot_disconnect try: # Only start a song if the user trying to play a song is in (...)
• 06:37
  How to set ffmpeg reconnect or quit when rtsp stream connection breaks - hate29 Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to save rtsp stream from my wi-fi camera. It works fine but when connection dies, I don't get any notice or it doesn't reconnect automatically. Here's my command: screen -S garage ffmpeg -hide_banner -y -loglevel error -rtsp_transport tcp -use_wallclock_as_timestamps 1 -i rtsp://user:passwordⓐ192.168.XXX.XXX:XXX/stream1 -vcodec copy -acodec copy -f segment -reset_timestamps 1 -segment_time 14400 -segment_format mkv -segment_atclocktime 1 -strftime 1 garage%Y%m%dT%H%M%S.mkv I found this code from this site (if I remember correctly), tinkered a (...)

6 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:26
  cross compiling ffmpeg with conan fails: x86_64-w64-mingw32-ld: unrecognised emulation mode: 64 - ovni jeroqui Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to install ffmpeg (and some other libraries, but ffmpeg alone fails too) with conan to cross compile from linux (ubuntu) to windows. Conan throws an error on Running configure, inside build(). It says that x86_64-w64-mingw32-gcc is unable to create an executable file.. On the config log I discovered it's because of a flag when running tests for x86_64-w64-mingw32-ld. x86_64-w64-mingw32-ld -m64 -L/home/jeroqui/.conan2/p/b/freetd8d522cfe5ed9/p/lib -L/home/jeroqui/.conan2/p/b/libsv9862cce477f3c/p/lib -L/home/jeroqui/.conan2/p/b/opensf32bb84148b27/p/lib (...)
• 22:09
  FFmpeg/DASH: duration or timestamp out of range for mov/mp4 format - mike Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert a aac stream to dash. The issue is that I get a lot of errors as below(though it seems to segment it into multiple files but I get errors on the player too). The question is why do I get these errors and how can I fix it? If I simply convert "copy" it into to a single mp4 file it works without error. ffmpeg -i "a.mkv" -y -map 0:1 -c:0 copy -min_seg_duration 1000000 -use_timeline 1 -use_template 1 -init_seg_name init.mp4s -media_seg_name "\\$Number\\$.mp4s" -adaptation_sets "id=1,streams=0" -remove_at_exit 0 -f dash -dash 1 (...)
• 13:51
  cv2/ffmpeg "grabFrame packet read max attempts exceeded" error after exactly reading certain number of frames - banjaxing Newest 'ffmpeg' Questions - Stack Overflow
  I am using OpenCV to extract frames from videos, run a segmentation AI model, and save the frames and masks to a folder. When I run my code to extract the frame from I encounter the error "grabFrame packet read max attempts exceeded" after processing a certain number of frames. This issue occurs consistently for the same videos across multiple environments. Error message: [ WARN:0ⓐ379.898] global cap_ffmpeg_impl.hpp:1541 grabFrame packet read max attempts exceeded, if your video have multiple streams (video, audio) try to increase attempt limit by setting environment variable (...)
• 13:27
  Remove a section from the middle of a video without concat - user3310334 Newest 'ffmpeg' Questions - Stack Overflow
  How do I cut a section out of a video with ffmpeg? Imagine I have a 60 second mp4 A. I want to remove all the stuff from 0:15 to 0:45. The result should be a 30-second mp4, which is composed of the first 15 seconds of A directly followed by the last 15 seconds of A. How can I do this without using concat? I know how I could do it by creating two intermediary files and then using ffmpeg to concat them. I don't want to have to perform so much manual work for this (simple?) operation. I have also seen the trim filder used for removing multiple parts from a (...)
• 09:07
  Unable to retrieve video stream from RTSP URL inside Docker container - birdalugur Newest 'ffmpeg' Questions - Stack Overflow
  I have a FastAPI application running inside a Docker container that is trying to stream video from an RTSP camera URL using OpenCV. The setup works fine locally, but when running inside Docker, the /video endpoint does not return a stream and times out. Below are the details of the issue. Docker Setup: Dockerfile: FROM python:3.10.12 RUN apt-get update && apt-get install -y \\ libgl1-mesa-glx \\ libglib2.0-0 WORKDIR /app COPY requirements.txt . RUN pip install --no-cache-dir -r requirements.txt COPY . . CMD (...)

5 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:25
  How to change pitch and tempo together, reliably with ffmpeg [closed] - Ray C Newest 'ffmpeg' Questions - Stack Overflow
  I know how to change tempo with atempo, but the audio file becomes distorted a bit, and I can't find a reliable way to change pitch. (say, increase tempo and pitch together 140%) Sox has a speed option, but truncates the volume AND isn't as widely available as ffmpeg. mplayer has a speed option which works perfectly, but I can't output without additional libraries. I seem to understand ffmpeg doesn't have a way to change pitch (maybe it does recently?) but is there a way to change frequency or some other flags to emulate changing pitch? Looked quite (...)
• 18:28
  Best practices for developing scalable video transcoding server on Amazon Web Services? [closed] - undefined Newest 'ffmpeg' Questions - Stack Overflow
  What do people think are the most important issues when developing an application that is going to allow users to upload video and images to a server and have them transcoded by FFMPEG and stored in amazon S3? I have a couple of options; install FFMPEG on the same server that handles file uploads, when a video is uploaded and stored on EC2 instance, call FFMPEG to convert it then when done, write the file to S3 bucket and dispose of the original. How scalable is this? What happens when many users upload at the same time? How do I manage multiple processes at once? How (...)
• 16:08
  Unable to write textclip with moviepy due to errors with Imagemagick - Sato Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to write TextClip into a video with moviepy. It has always been working, yet after I reinstalled ffmpeg, it doesn't work anymore (I am not sure whether it has caused it, but I mentioned it in case it does). Some of the TextClip objects are pure spaces. I got the following error message: Traceback (most recent call last): File "C:\\Users\\USER\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\\LocalCache\\local-packages\\Python38\\site-packages\\moviepy\\video\\VideoClip.py", line 1137, in __init__ subprocess_call(cmd, logger=None)  (...)
• 15:09
  Ffmpeg PNG image sequence into 360 video - Irmak Ozarslan Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to make a PNG sequence I got from blender(already in equirectangular format, same properties all files) into 360 equirectangular video for projection mapping. My files have 2 step frame rate resulting in file names such as 002-004-006.... How is this done with ffmpeg? I'm total noob with this program :) Thank you. I checked ffmpeg website, however for 360 format with filenames that does not have one step like 01-02-03, instead 2 steps like 02-04-06, I did not really understand how to convert my 7000 PNG images into 360 (...)
• 03:31
  ffmpeg Non monotonous DTS, Previous DTS is always the same, audio microphone streaming [closed] - adrien gonzalez Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to stream audio from a microphone using rtp. I'm on Raspberry and use an external sound card (HifiBerry DAC + ADC Pro). My goal is to stream audio with the lowest latency possible to others Raspberry reading this audio with ffplay. I try not to compress the audio flux and leave it untouched as wav 48000 Hz. I encounter often some Non Monotonous DTS errors. When this happens I have a latency of hundred of milliseconds adding itself. I tried to add the +igndts flag but it is not changing anything. Also tried +genpts flag. What is (...)
• 01:14
  FFMPEG commands isn't working in Android Q - Krupali Shingala Newest 'ffmpeg' Questions - Stack Overflow
  Try this command for merge two audio files, but its not working in Android 10.0(Q) while targeting sdk 29. But, this command is completely working on targeting sdk 24 to 28. I am using this library of FFMPEG implementation 'nl.bravobit:android-ffmpeg:1.1.7' "-y", "-i", path1, "-i", path2, "-filter_complex", "[0:0][1:0] amix=inputs=2:duration=longest", "-c:a", "libmp3lame", savedPath my Error log: 2019-09-28 13:48:32.037 16041-16166/com.merger.cut E/FFmpeg: Exception while trying to run: [/data/user/0/com..merger.cut/files/ffmpeg, -y, -i, (...)

4 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:14
  How to force timecode change ffmpeg convert video to audio - little star Newest 'ffmpeg' Questions - Stack Overflow
  I'm having problem to force timecode change while converting a video to an audio using ffmpeg. This is the command I'm trying: ffmpeg.exe -i source.MP4 -vn -map 0:d -timecode 01:20:10:00 -y target.mov This is showing the Time code of first frame as the source one, it is not overwriting it. How can I force it to change on one command? So I want to convert video to audio and force timecode change , is that possible?
• 12:22
  The problem with the AudioDispatcher, the analysis in audioDispatcherFactory is not running, TarsosDSP - roman_gor_ Newest 'ffmpeg' Questions - Stack Overflow
  I'm making an application for sound analysis and spotlight control. The colors of the spotlight change to the beat of the music. I use the TarsosDSP library for this, additionally downloaded the FFmpeg-Kit library to convert audio to WAV format, PCM 16L to work with audioDispatcher. The problem is that when audio is transmitted in the correct format, dispatcher starts and immediately ends. The boolean Process method is not executed, but the process Finished() method is executed. I found out that the stream starts, the file is not empty, it is converted to the correct format, BUT (...)
• 10:04
  Which StackExchange should be a configuration/compilation question? [migrated] - Lerenn Newest 'ffmpeg' Questions - Stack Overflow
  I asked a question yesterday on a configuration/compilation error regarding FFMPEG with NVCC that threw up some C++ errors. Being a source code error, I thought that the StackOverflow part was appropriate but apparently not. Could you help me find on which StackExchange I should post my question ? Here is my old post: Configuration error when configuring the FFMPEG compilation with NVCC/CUDA Thank you !!
• 06:45
  PyQt6 6.7.0 - How to fix error: No QtMultimedia backends found - Belleroph0N Newest 'ffmpeg' Questions - Stack Overflow
  Problem on Windows 10 and Windows 11 using Anaconda. Here is the full error message for PyQt6=6.7.0: No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and QAudioSource are available. Failed to initialize QMediaPlayer "Not available" Failed to create QVideoSink "Not available" Installed PyQt6 using a requirements file: PyQt6 PyQt6-WebEngine requests pyserial pynput Here are a couple things I tried: Reroll version back to PyQt6=6.6.1. This results in an error as well: ImportError: DLL (...) -- issue
• 06:39
  Comparing the video/audio output of ffmpeg commands between versions to test for regessions - lavantgarde Newest 'ffmpeg' Questions - Stack Overflow
  Our software uses ffmpeg to do various video/audio encoding (e.g. changing volume, re-encoding to a different video format (e.g. yuv420p), scaling, etc.) Every few months we upgrade ffmpeg versions, and we've found that sometimes parameters change and regressions are introduced. What ffmpeg tools could we use to create unit tests to validate certain commands for regressions? I believe checking hashes won't be enough; doing visual inspections manually is also something we'd like to avoid to automate. Here's an example pseudocode: var ffmpegV1 = (...)

3 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:27
  pydub - setting the start time of an audio file? [closed] - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  I have an audio file, which I create using pydub, and when I use ffmpeg to play I notice it has a start time defined: Input #0, mpeg, from 'audio_117.ts': Duration: 00:00:09.91, start: 0.500000, bitrate: 66 kb/s I am trying to play the same audio file but with different formats. And I notice the start time is different with each format.: mp3: Input #0, mp3, from 'audio_117.mp3': Metadata: encoder : Lavf61.7.100 Duration: 00:00:10.03, start: 0.023021, bitrate: 64 kb/s ogg: Input #0, ogg, from (...)
• 20:20
  Enable Quality Selector Control in Angular Using Video.js - Abhay Singh Newest 'ffmpeg' Questions - Stack Overflow
  I am using Video.js in an Angular 19.1.3 application, with version 8.21.0 of Video.js. I have successfully set up an HLS stream using a master index.m3u8 file, and the player automatically switches to lower quality segments when the network is slow, and to higher quality when the network is good. This part works as expected. However, I would like to add a manual quality selection option to allow users to choose the video quality themselves. Despite trying several plugins (such as videojs-hls-quality-selector and videojs-contrib-quality-levels), I haven't been able to get it (...)
• 06:02
  ffmpeg pix_fmt yuv420p encoder [closed] - Piotr Sikora Newest 'ffmpeg' Questions - Stack Overflow
  I need to rewrite my ffmpeg command to use CUDA-a. my starting command was: ffmpeg -i 5ee1ac69-cdd6-4044-8bf5-08fc47db2cd9 -y -acodec libfdk_aac -vcodec h264 -threads 4 -f mp4 -movflags faststart -max_muxing_queue_size 1024 -map_metadata -1 -pix_fmt yuv420p -q:a 5 -vf scale=w=240:h=-2 -preset medium -maxrate:v 522240 -bufsize:v 1044480 -b_strategy 1 -bf 16 -r 30 -g:v 60 -bf 4 -gpu 0 test-orig.mp4 Next I changed -vcodec h264_nvenc Following I added -hwaccel cuda and everythn works But when I want to add -hwaccel_output_format cuda I found two problems. First (...)
• 16:23
  Configuration error when configuring the FFMPEG compilation with NVCC/CUDA [closed] - Lerenn Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to compile the last FFMPEG version (49726a922fd2b358feb7753488d415180da5121c) on Fedora 41 with some libraries, including the CUDA libraries. Everything works well when compiling without CUDA, but I have 2 cryptic errors when trying to run the configure command with the NVCC: nvcc -gencode arch=compute_60,code=sm_60 -O2 -std=c++11 -m64 -ptx -c -o /tmp/ffconf.q0uMcStN/test.o /tmp/ffconf.q0uMcStN/test.cu nvcc warning : Support for offline compilation for architectures prior to '_75' will be removed in a future release (Use (...) -- https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html
• 15:00
  What are the alternatives for ffserver? - Benjamin Newest 'ffmpeg' Questions - Stack Overflow
  Since the ffmpeg no longer support ffserver, then which server could I use to steamming videos transcoded by ffmpeg?
• 05:17
  Merged Video Contains Inverted Clips After First Video Ends - Nikunj Agrawal Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a Flutter application that merges multiple videos using ffmpeg_kit_flutter . However, after merging, I notice that the second video (and any subsequent ones) appear inverted or rotated in the final output. Issue Details: The first video appears normal. The videos can be recorded using both front and back cameras. The second (and later) videos are flipped or rotated upside down. This happens after merging using ffmpeg_kit_flutter. Question: How can I correctly merge multiple videos in Flutter without rotation issues? Is there a way to (...)

2 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:36
  FFMPEG not saving logs when converting to audio format - PUXIII Newest 'ffmpeg' Questions - Stack Overflow
  The command does not save or even create a file: ffmpeg -i "video.mp4" -f mp3 "audio.mp3" -vstats_file "log_file.log" And if you convert to a video file, everything normally creates and writes: ffmpeg -i "video.mp4" -f mp3 "video.avi" -vstats_file "log_file.log" Goal: to pull out the time from the log file and bind it to the process bar. There are no problems with video, everything works. But with the sound does not work. I tried the command: ffmpeg -i "video.mp4" -f mp3 "video.avi" >2 "log_file.txt" But there are other problems popping (...)
• 21:07
  Use nvidia hardware acceleration to merge webms with pngs in ffmpeg - Joshi234 Newest 'ffmpeg' Questions - Stack Overflow
  So I need to merge around 18000 webms with with pngs, however on software encoding it's really slow, so I'm trying to use hardware acceleration to make this faster. I tried a lot of different stuff but none of them seems to work and it gives me generic errors to what I couldn't find anything relavant. This is the most "succesful" try I had: ffmpeg -hwaccel cuvid -c:v vp9_cuvid -i lightray.webm -i card.png -filter_complex "[1]format=argb,colorchannelmixer=aa=0.35[ol];[0][ol]overlay" -colorspace 5 -c:a copy output.webm Which gives me this error: ffmpeg (...)
• 19:11
  How to execute FFMPEG using a compiled FFMPEG jar on Android - Valtinho Newest 'ffmpeg' Questions - Stack Overflow
  I added org.bytedeco.javacpp's ffmpeg-2.3-0-9.jar (https://www.versioneye.com/java/org.bytedeco.javacpp-presets:ffmpeg/2.3-0.9) and I need to be able to execute a command inside of my android app, such as: ffmpeg -ss 00:00:00 -t 00:00:15 -i in.mp4 -codec copy out.mp4 However, "ffmpeg" is not a class or a method that is exposed by this jar. Some posts suggest that I should be using the exec method when dealing with ffmpeg native code, but how do you do that (if that's even the right thing to do with this library)? I am trying the following command (...) -- https://www.versioneye.com/java/org.bytedeco.javacpp-presets:ffmpeg/2.3-0.9
• 15:53
  Automating Basic Video Editing [closed] - user29470652 Newest 'ffmpeg' Questions - Stack Overflow
  What's guys! I am a beginner in programming. As of now, I have created a basic YouTube downloader with the help of Python, FFmpeg, yt dlp, and Flaskapp. Now, I am automating the basic video editing part ( Turn bulk video files into a basic similar edit like we have one template then we add a caption from the title of the video, then place the video in the center of the template trim out to meet the video length of the given video then saving it) with the help of FFmpeg. Has anyone already tried or built it?? Any marketer or video editor?? I am halfway to the (...) -- enter image description here
• 17:14
  How to Merge two videos without re-encoding [duplicate] - Yogesh Agarwal Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to Merge two video without re-encoding them. Currently i use a approach which is too much time consuming and resource as well. I just want to merge without re-encoding them. Currently i am using exec ( "cpulimit -l 90 ffmpeg -i $filename1 -qscale 0 $intermediate1 &> stream1.log" ); exec ( "cpulimit -l 90 ffmpeg -i $filename2 -qscale 0 $intermediate2 &> stream2.log" ); $output = '/var/www/html/myserver/merg/'.uniqid().'_merge.'.$ext; exec ( "cpulimit -l 90 cat $intermediate1 $intermediate2 | ffmpeg -i - -qscale 0 (...)
• 16:24
  How can I extract audio from video with ffmpeg? - user1269669 Newest 'ffmpeg' Questions - Stack Overflow
  I tried the following command to extract audio from video: ffmpeg -i Sample.avi -vn -ar 44100 -ac 2 -ab 192k -f mp3 Sample.mp3 but I get the following output libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.19. 0 / 1.19. 0 libswscale 0.11. 0 / 0.11. 0 libpostproc 51. 2. 0 / 51. 2. 0 SamplE.avi: Invalid data found when processing input Can anyone help, (...)
• 10:26
  Gstreamer: how to achieve the same effect as ffmpeg filter tmix - dudengke Newest 'ffmpeg' Questions - Stack Overflow
  The ffmpeg command can smooth video: ffmpeg -i 1.h265 -vf "tmix=frames=3:weights=1 1 1" 2.h265 Now i want to use gstreamer to smooth but I can't find the avfilter in gst-libav gst-launch-1.0 filesrc location=1.h265 ! decodebin ! videoconvert ! avfilter filter="tmix=frames=3:weights=1 1 1" ! videoconvert ! gstsink My question: Is there another way gstreamer can achieve the same effect as "tmix" in ffmpeg? I tried chatGPT, but the effect was not. gst-launch-1.0 filesrc location=1.h265 ! h265parse ! avdec_h265 ! videoconvert ! tee name=t \\ t. ! (...) -- gst-libav
• 07:19
  Extracting segment from MTS video without re-rendering and get thin changing color band on top of output - David Newest 'ffmpeg' Questions - Stack Overflow
  Extracting segment from .MTS video without re-rendering (for speed) and get a thin changing multi-color band on top of output. There is no band on the original video. How can this be prevented? I used the following commands: set i="" set o="" %pgm% -i %i% -ss 2:40 -to 8:39 -async 1 %o% -c:v copy -c:a copy

1er février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:16
  How to fix 'ffmpeg server returned 403 forbidden (access denied)? - peppah Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a website to convert youtube videos using NodeJS. I am using a package to convert them (horizon-youtube-mp3). The package works, however, I'm having problems converting. Whenever I try to convert a youtube link, it will return 'server returned 403 forbidden access'. This error happens in 95% of the links. Some links actually work and convert correctly, but only a few. I tried running the script on 3 different computers running 3 different OS's. My VPS, my laptop and my home PC. I looked on the web but couldn't find anything (...)
• 07:37
  How to check if video have visually corrupted frames? - B Lolo Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to convert and analyze video, mostly avi to mkv. Sometimes video that I work on have one frame corrupted in random place, , it looks like: Digital scramble How to check if frame is visually corrupted in ffmpeg? It's not file corruption (not byte corruption), I know that because this video artifact is present in source file, it's just visual corruption. This command line gives error free result: ffmpeg -i myinput.avi params out.mkv 2> error_log.txt How to find if similar pattern is on any more frames (...) -- Digital scramble
• 06:03
  varying RTP stream result from custom SIP implementation - Nik Hendricks Newest 'ffmpeg' Questions - Stack Overflow
  I am in the process of creating my own SIP implementation in Node.js. As well as a b2bua as a learning project. Finding people wise in the ways of SIP has proved to be difficult elsewhere but here I have had good results this is the GitHub of my library so far node.js-sip this is the GitHub of my PBX so far FlowPBX Currently, everything is working as I expect. Although I really have some questions on possible errors in my implementation. My main issue is with RTP streams. Currently I am utilizing ffmpeg. my function goes as follows start_stream(call_id, (...) -- node.js-sip, FlowPBX
• 04:56
  Average set of 5 frames into single output frames - xnx Newest 'ffmpeg' Questions - Stack Overflow
  I would like to average the values of sequences of frames into a single output frames. I think this would be the ffmpeg tmix filter, but I can't find the right setting. Example behavior: Input video frames: 1,2,3,4,5 -> Output video frame: 1 Input video frames: 6,7,8,9,10 -> Output video frame: 2 Input video frames: 11,12,13,14,15 -> Output video frame: 3 etc. How could I do this with ffmpeg, or any other tool?

31 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 00:42
  How do I chromakey an enclosed shape (or background) in ffmpeg? [closed] - JustAnotherCodemonkey Newest 'ffmpeg' Questions - Stack Overflow
  I have an animation with a fully contiguous 0xFFFFFF white background I want to remove. The issue is that the foreground contains the same exact color. These parts are all completely enclosed and contained within at least several pixels of a different shade at its weakest. All I need is to be able to essentially, for each frame, make all pixels that are white and connected by white to 0,0, transparent. Chromakey and its siblings remove those bits from the foreground as well which is unacceptable and backgroundkey, well you can imagine how that goes. I'm somewhat proficient (...)
• 13:09
  Scalable Webinar Features Using Open-Source Tools? [closed] - Firas Ben said Newest 'ffmpeg' Questions - Stack Overflow
  I am searching for a scalable webinar solution that can handle 1000+ concurrent users. I have explored platforms like BigBlueButton but encountered limitations with scalability in real-world scenarios. My requirements include: Support for RTMP and HLS streaming. Chat and screen-sharing functionalities. Ability to integrate with custom APIs. I’d like to know how to address these challenges using open-source tools. For instance: What configurations are necessary to scale tools like BigBlueButton for large audiences? Are there specific (...)
• 15:02
  How to Use Temporal and Spatial Scalability with SVT-AV1 in FFMPEG? - MReza Newest 'ffmpeg' Questions - Stack Overflow
  I am working with SvtAv1EncApp to see the impact of temporal and spatial scalability. I have successfully compiled the codec provided in https://gitlab.com/AOMediaCodec/SVT-AV1/ and built it with FFMPEG. I would like to encode my *.yuv uncompressed video file with scalable bitstream notably with one base layer + one or multiple enhancement layers (both temporal and spatial if possible). Then by -oppoint option provided by https://ffmpeg.org/ffmpeg-codecs.html#Options-30 would show me the quality difference at the decoder side. However, I do not know how to encode and (...) -- https://gitlab.com/AOMediaCodec/SVT-AV1/, https://ffmpeg.org/ffmpeg-codecs.html#Options-30
• 09:01
  Moviepy V2 How do you position a TextClip and apply an effect? - Brandon Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to refactor my code to use the new Moviepy Version 2.0 and I'm having trouble with .with_position / SlideIn / SlideOut effect. When I apply the SlideIn effect it seems to override any position I have applied. It there a way to explicitly set the position of a TextClip and apply a SlideIn and SlideOut effect without using nested CompositeVideoClip? In the below example the with_position((0,0)) would not be implemented and the position of the TextClip would revert to the default centred position. If I remove the lines .with_effect... then the TextClip would be (...)
• 05:11
  How to use the video datastreaming I get from nginx server? - Jennie Tsai Newest 'ffmpeg' Questions - Stack Overflow
  I have three nodes in my network: dataServer --- node1 --- node2. My video data "friends.mp4" is saved on dataServer. I started both dataServer and node2 as rtmp-nginx servers. I use ffmpeg on node1 to pull datastreaming on dataServerand and push the converted datastreaming to the application "live" on node2. Here's my configuration of nginx.conf for node2. worker_processes 1; events worker_connections 1024; rtmp server listen 1935; chunk_size 4000; application play play /usr/local/nginx/html/play;  (...)
• 06:13
  How do I read a video's length/duration? - DnK Newest 'ffmpeg' Questions - Stack Overflow
  How can I batch generate .edl files for a folder of videos with different run times? I need to skip an exact amount of seconds from the start and another from the end. Videos have different runtimes. I can make .edl files for skipping the intro but need a way to read the video runtime to skip the last 60 or 90 seconds. Edit decision list format: 0:00:00 0:01:20. 3 If the video is 40 minutes 30 seconds the edit decision list skipping 80 seconds from the start and 90 seconds from the end should be: 0:00:00 0:01:20. 3 0:39:00 0:40:30. (...) -- .edl files
• 04:13
  How to convert multiple video files in a specific path outputvideo with the same video name - Oussama Gamer Newest 'ffmpeg' Questions - Stack Overflow
  The following code to converts a one video from mp4 to avi using ffmpeg ffmpeg.exe -i "kingman.mp4" -c copy "kingman.avi" I need to convert multiple videos in a specific path. "outputvideo" with the same video name This is the my code that needs to be modified. from pathlib import Path import subprocess from glob import glob all_files = glob('./video/*.mp4') for filename in all_files: videofile = Path(filename) outputfile = Path(r"./outputvideo/") codec = "copy" ffmpeg_path = (r"ffmpeg.exe") outputfile = (...)
• 03:06
  Cannot display ffprobe information from youtube properly - Krishnaap Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to grab information from youtube streams using ffprobe and python. I could display offline video information properly on python, cannot do the same from youtube live streams. os.system("ffprobe -hide_banner -stats -v quiet -pretty -show_entries format=size,duration:stream=filename,index,codec_type,codec_name,profile,bit_rate,width,height -of compact -i https://www.youtube.com/watch?v=QzsfLSP6hkI") showing an error Argument 'https://www.youtube.com/watch?v=QzsfLSP6hkI' provided as input filename, but 'quiet' was already (...)

30 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:08
  ffmpeg video segment conflicts with frame_skip setpts filters - Jeff Hansen Newest 'ffmpeg' Questions - Stack Overflow
  My goal is to record an rtsp stream into 5 second segments, but I want those segments to only include every 5th frame and be as compact as possible. Essentially, the resulting video will be a 1 second video that shows 5 seconds of realtime content. I have found that ffmpeg has video segment muxing that works really well. I have also found that I can apply a -filter:v select=not(mod(n\\,frame_skip)),setpts=PTS/frame_skip filter to only keep every 5th frame and also ensure that the resulting mp4 is 1 second instead of 5 seconds. This time reduction saves space, AND it also ensures that (...)
• 12:35
  Getting ffmpeg to capture the full screen of xfvb-run screen running puppeteer script, and send it over rtmp - james Newest 'ffmpeg' Questions - Stack Overflow
  My problem I can't get ffmpeg or xvfb-run to stream the full screen to ffplay/videolan, it only captures a part of the screen. Update 2 I answered the question myself in a follow up answer, hopefully it can be useful for someone else with the same problem. Update 1 So the problem is definitely with xvfb-run, since the two following commands, still give a webm file, that only show parts of the screen ffmpeg -f x11grab -i :99 -g 50 -b:v 4000k -maxrate 4000k -bufsize 8000k -f webm -s 384x216 "blank.webm" xvfb-run -n 99 -a --server-args="-screen 0 (...)
• 05:24
  How to split an incoming stream into multiple streams with different resolutions? - Cobalt Newest 'ffmpeg' Questions - Stack Overflow
  How to split an incoming stream into several streams with different resolutions on the MediaMTX server? There is one incoming stream in rtsp, it needs to be split into several channels with different resolutions. I think in the direction of ffmpeg, but I don't understand how to register this in the mediamtx settings.
• 05:24
  FFmpeg move overlay from one pixel coordinate to another - occvtech Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to write a command within FFmpeg that will first overlay one video stream on top of another one. Then I want the overlayed video to move from one pixel coordinate at a known time, and end at another pixel coordinate at a later time. I'm comfortable with the basics of the -filter_complex, but I cannot figure out how to apply any arithmetic expressions - like the one's referenced here: https://www.ffmpeg.org/ffmpeg-utils.html#Expression-Evaluation Here's an example of something I'd like to accomplish. ffmpeg -i [INPUT1] -i (...) -- https://www.ffmpeg.org/ffmpeg-utils.html#Expression-Evaluation

29 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:49
  python converting video to audio - programmer44 Newest 'ffmpeg' Questions - Stack Overflow
  We are working on a project to convert video to audio, and this is the sample code: from converter import Converter from moviepy.editor import * c = Converter() clipv = 'g.mp4' clipc = VideoFileClip(clipv).subclip(0,20) conv = c.convert(clipc, 'clip5.mp3', 'format':'mp3','audio':'codec': 'mp3','bitrate':'22050','channels':1) for timecode in conv: pass However, it gives me this error Traceback (most recent call last) File (...)
• 14:59
  FFmpeg av_dump_format showing incorrect output, but ffprobe displays correct metadata - グルグル Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg 7.1 source build on windows and compilation configuration as follow: configuration: --toolchain=msvc --arch=x86_64 --enable-x86asm --enable-asm --enable-shared --enable-w32threads --prefix=/D/build When I use av_dump_format to print metadata of test.mp3, it display the incorrect information. extern "C" #include int main() av_log_set_level(AV_LOG_DEBUG); auto url = "D:/music/test.mp3"; AVFormatContext* fmt; auto ret = avformat_open_input(&fmt, url, nullptr, (...)
• 13:55
  converting mp3 to ts with ffmpeg [closed] - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  i have an mp3 of about 50 kb. if i use ffmpeg to convert to ts: ffmpeg -i sample.mp3 sample.ts i end up getting a file of almost 200kb. while if i use some online software which converts mp3 to ts (https://clideo.com/editor/?convertTo=TS for example), i get a file with similar size to the original mp3. why does the ffmpeg conversion creates such a large file? is it possible to reduce that? -- https://clideo.com/editor/?convertTo=TS
• 09:09
  GPU-accelerated video processing with ffmpeg - Wang Hai Newest 'ffmpeg' Questions - Stack Overflow
  I want to use ffmpeg to accelerate video encode and decode with an NVIDIA GPU. From NVIDIA's website: NVIDIA GPUs contain one or more hardware-based decoder and encoder(s) (separate from the CUDA cores) which provides fully-accelerated hardware-based video decoding and encoding for several popular codecs. With decoding/encoding offloaded, the graphics engine and the CPU are free for other operations. My question is: can I use CUDA cores to encode and decode video, maybe (...) -- NVIDIA's website
• 09:07
  HlS playlist skip files with ffmpeg - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  I simply downloaded 5 mp3 files from here: https://samplelib.com/sample-mp3.html which means i have: sample-3s.mp3 sample-6s.mp3 sample-9s.mp3 sample-12s.mp3 sample-15s.mp3 and then i create a simple hls playlist sample.m3u8: #EXTM3U #EXT-X-TARGETDURATION:20 #EXT-X-MEDIA-SEQUENCE:0 #EXTINF:3.0, sample-3s.mp3 #EXTINF:6.0, sample-6s.mp3 #EXTINF:9.0, sample-9s.mp3 #EXTINF:12.0, sample-12s.mp3 #EXTINF:15.0, sample-15s.mp3 But when i play this playlist: ffplay sample.m3u8 i (...) -- https://samplelib.com/sample-mp3.html

28 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:02
  Silent Audio In Concatenated MP4s (Python, FFMPEG) - John Coleman Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to solve an issue with concatenating several video files and ending up with silent audio for the whole generated video. Part of this is generating two videos, one title and one end screen, created from images, which I have added silence to. I then take these and add up to seven videos (with stereo audio, 48000hz). So, it ends up being Title + up to seven videos + end screen. I've added silence to the title/end screens, set the sample rate, channels, etc. but still no go. I still lose audio on the videos that should have audio (that originally did).  (...)
• 06:23
  orangepi zero 2w, ubuntu, using a usb webcam ffmpeg to record videos, low FPS [closed] - Qingfu Shi Newest 'ffmpeg' Questions - Stack Overflow
  I use a OrpangePi zero 2w, USB HIK 2K Cam, to record videos. Ubuntu, ffmpeg installed, the cmd ffmpeg -f v4l2 -video_size 1920x1080 -r 25 -input_format mjpeg -i /dev/video1 -vf "transpose=1" -c:v libx264 -preset fast -crf 23 output.mp4 I want the fps to be at least 25, so it looks smooth, but I only got about 4.7 fps. ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 11 (Ubuntu 11.2.0-19ubuntu1) configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened (...)
• 13:52
  ImportError: No module named 'pydub' - ensminger Newest 'ffmpeg' Questions - Stack Overflow
  I am creating a simple script that will use pydub to fetch files from a directory based on their name, then stitch a few of them together and export the result. I had the script working great in a Windows environment (Win 7, python 3.4), but now I'm trying to run on OSX. I have installed all necessary components - ffmpeg, libav. I have just installed pydub with pip, pulling directly from github. My file starts with the input statement from pydub import AudioSegment, and this is what I get: Traceback (most recent call last): File (...) -- github
• 13:30
  FFmpeg avio_open_dir returns -40 on Windows, even when directory exists - グルグル Newest 'ffmpeg' Questions - Stack Overflow
  I'm use ffmpeg7.1 on windows 10. And libavformat's version is 61. I use a absolute path of a directory on avio_open_dir but it's failed, and return -40. I use av_err2str got Function not implemented. What problem it is? extern "C" #include int main() av_log_set_level(AV_LOG_DEBUG); auto dir = "D:\\\\music"; AVIODirContext* dirCtx; auto ret = avio_open_dir(&dirCtx, dir, nullptr); if (ret < 0) av_log(nullptr, AV_LOG_ERROR, "Can't open %s: %s\\n", dir, av_err2str(ret));  (...)
• 09:49
  Recommendations for Open Source Webinar Platforms Supporting 1000+ Users [closed] - Firas Ben said Newest 'ffmpeg' Questions - Stack Overflow
  I am looking for an open-source webinar platform capable of hosting 1000+ concurrent users. My primary requirements are: Scalability to handle large audiences seamlessly. Support for features like video streaming, screen sharing, and chat functionality. Compatibility with modern technologies such as RTMP and HLS. Extensibility to integrate with other tools or APIs. I’ve come across platforms like BigBlueButton but it cannot handle a great number of users in a session, so I’d like to know if there are other options (...)
• 09:11
  Creating an HLS audio playlist from multiple .mp3 files - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  I have a list of .mp3 audio files, and i would simply like to create an HLS playlist from those files. I tried to manually create a m3u8 playlist file. for example: #EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:10 #EXT-X-MEDIA-SEQUENCE:0 #EXTINF:10.0, audio_1.mp3 #EXTINF:10.0, audio_2.mp3 #EXTINF:10.0, audio_3.mp3 #EXTINF:10.0, audio_4.mp3 #EXTINF:10.0, audio_5.mp3 But when doing so, if i simply play that playlist with ffmpeg, the first file being played is audio 4 for some reason, and there also a millisecond of (...)
• 01:03
  Writing a video frame by frame using ffmpeg - Chris Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to write a video frame by frame using ffmpeg as explained here: http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/ However, I am always getting an OSError: [Errno 22] Invalid argument. I am on Windows 7 and using Python 3.4. Here is the code: import subprocess as sp import numpy as np import time ffmpeg_bin = r'C:\\path\\to\\ffmpeg\\ffmpeg.exe' command = [ffmpeg_bin, '-y', # (optional) overwrite output file if it exists '-f', 'rawvideo',  (...) -- http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/

27 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:20
  How to set PTS value to .mp4 video frames without losing video quality - Goan Newest 'ffmpeg' Questions - Stack Overflow
  I have searched for a solution to this problem for a while now, and tried many different approaches without any success. I have an .mp4 video (no audio) in 30Hz along with a text file timestamps.txt containing exact timestamps for each frame of the video. My goal is to embed the timestamps into the frames metadata without losing video quality. E.g. the current video timestamps (which is exactly 30Hz): 0.0333 0.0666 0.0999 ... I aim to embed exact timestamps such as (which could yield e.g. 29.94Hz): 0.0313 0.0656 0.0975 ... I (...)
• 08:33
  Extract just the audio link from a youtube video without converting - MR-4O4 Newest 'ffmpeg' Questions - Stack Overflow
  I know there are hundreds of sites to convert youtube video to mp3. Most of them do it by first downloading the video and then converting it to mp3(or any other audio format) on their server using youtube-dl, ffmpeg or similar programs. What I want to know is, is there any way I can just extract the audio link for any youtube video? I don't know if it's possible but I saw a couple of websites doing it . First Website : Openaisearch.com This website simply gives a download link for the audio(getting it from youtube videos). I searched for a song and saw (...) -- Openaisearch.com, http://keepvid.com/?url=https://www.youtube.com/watch?v=PT2_F-1esPk

26 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:55
  ffmpeg memory usage, or memory leaks - happycoding-boy Newest 'ffmpeg' Questions - Stack Overflow
  I'v write a simple program to get audio waveform data, which using ffmpeg version 6.1. And program works fine. But I get a problem: when program running at begin, system report using about 6MB memory, but when I call the function and cleanup the resouce alloced, system report about 9MB memory used. In my theory, after cleanup, it should be 6MB again. [I'm sure, I freed the AVPacket when read stream, and AVFrame for decoding.] My question is: Is this normal or not? int main(int argc, char *argv[]) // breakpoint here: ~= 6MB get_audio_waveform(); // (...)
• 17:58
  No Audio in Recorded File from IP Camera using ffmpeg - LeXela-ED Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to record video and audio from an IP camera equipped with a microphone. Below is a simplified version of my code, which compiles and runs without errors: #include #include #include #include #include #define AUDIO_CODEC "aac" void log_error(const char *message, int error_code) char error_buffer[AV_ERROR_MAX_STRING_SIZE]; av_strerror(error_code, error_buffer, sizeof(error_buffer)); fprintf(stderr, "%s: %s\\n", message, error_buffer); exit(1); int main(int argc, char *argv[]) const char (...)

25 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:50
  FFMPEG - Fading text with background - Helder Santos Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to fade a text in and out (the text has a background), at the moment, what I have is this command: 1. Blend command ffmpeg -y -i input.mp4 -filter_complex "drawtext=fontfile=HelveticaNeue.ttf:text='Testing': fontcolor=white:fontsize=40: box=1: boxcolor=blackⓐ0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2[subtitles];[subtitles][0:v]blend=all_expr='A*(if(between(T,1,2),(T-1),0))+B*(1-(if(between(T,1,2),(T-1),0)))'[out]" -map '[out]' -map 0:a output.mp4 The command above successfully fades in the drawtext (...)
• 18:05
  ffmpeg using an expression for tile filter [closed] - kaarch Newest 'ffmpeg' Questions - Stack Overflow
  Is there any way to supply the 'tile' filter of ffmpeg with an expression? I've tried about every combination I can think of using different escape characters and quotes, but it won't accept anything other than an explicit string like '10x10'. See the example below that works: ffmpeg -i "big_buck_bunny.mp4" -vf "tile=10x10" grid_%d.jpg I'd like to be able to do something like: ffmpeg -i "big_buck_bunny.mp4" -vf "tile=expr(n*2)x10" grid_%d.jpg Where 'n' is the current frame number. This isn't (...)
• 18:48
  ffmpeg batch reencode with subfolders - Alan Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to reencode a few hundred videos to X265 but there are many directories that have spaces in the filenames as do some of the files. I have looked at a bunch of scripts and am struggling to find one that works with the spaces and the different directory levels. This one works, as long as there is no sub directories: #!/bin/bash for i in *.avi; do ffmpeg -i "$i" -c:v libx265 -c:a copy X265_"$i" done I have been trying to work with this bash script, but it fails with the whitespaces I am (...)
• 16:40
  FFmpeg: canvas and crop work separately but result in black screen when combined - didi00 Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a video processing pipeline with FFmpeg, where I: Create a black canvas using the color filter. Crop a region from my video input. Overlay the cropped region onto the black canvas. Both the canvas and the crop display correctly when tested individually. However, when I attempt to combine them (overlay the crop onto the canvas), the result is a black screen. What Works: Black Canvas Alone: ffmpeg -filter_complex "color=c=black:s=1920x1080[out]" -map "[out]" -f nut - | ffplay - This shows a plain black screen, as (...)
• 12:36
  Duplicated PTS value when using rtsp transport UDP (H264 FU-A) - Christoph Newest 'ffmpeg' Questions - Stack Overflow
  I’m implementing a packet loss counter based on the PTS from the av_packet, and it works fine when using RTSP/TCP as the transport mode. However, when I switched to RTSP/UDP, two packets consistently share the same PTS. This puzzled me because I assumed that av_read_frame would parse the stream and provide "valid" packets. In both cases, the stream is FU-A H.264, and I expected FFmpeg to handle reassembly in both transport modes identically. My understanding was that if UDP packets were splitted, FFmpeg would reassemble them into a single av_packet, similar to how it handles (...)
• 12:29
  FFMPEG Corrupt output remuxing MP4 (Using API in C) -First file OK, 2nd file onwards is not - RichardP Newest 'ffmpeg' Questions - Stack Overflow
  I have a simple application written in C - it takes the video from a RTSP camera and just writes to disk in 1 minute segments. The first file created works fine, plays on anlmost anything. The Second file does not play. Programatically, The trace shows they are the same code flows, but I cant seem to find where the problem is to allow the 2nd file to be play exactly the same as the first. There are frames in the 2nd file but they are random. The second file is created EXACTLY the same way as the first. Any help from a guru would be greatly appreciated. EDIT: FIX - The (...)
• 12:40
  How to resize dimensions of video through ffmpeg-python? - kunambi Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to resize a video file which a user has uploaded to Django, by using ffmpeg-python. The documentation isn't very easy to understand, so I've tried to cobble this together from various sources. This method is run in a celery container, in order to not slow the experience for the user. The problem I'm facing is that I can't seem to resize the video file. I've tried two different approaches: from django.db import models from io import BytesIO from myapp.models import MediaModel def resize_video(mypk: str) -> None:  (...) -- ffmpeg-python
• 12:37
  FFMPEG - RADEON - VAAPI - Alfa channel overlay - Alexandre Leitão Newest 'ffmpeg' Questions - Stack Overflow
  Ok I got to my limit so decided to ask for help. I'm running a python app in a docker container. It works fine with VAAPI and hardware acceleration(AMD Radeon GPU) till I use filter complex. This is my command ffmpeg -v error -y -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -stream_loop -1 -f concat -i video_list.txt -stream_loop -1 -f concat -i overlay_list1.txt -stream_loop -1 -f concat -i overlay_list.txt -filter_complex "[0:v][1:v]overlay=x=0:y=0:shortest=1[out];[out][2:v]overlay=x=0:y=0:shortest=1[out1]" -map "[out1]" -map 1:a -c:v h264_vaapi -c:a aac -b:a 192k -t 1800 (...)
• 12:41
  FFmpeg overlay positioning issue: Converting frontend center coordinates to FFmpeg top-left coordinates - tarun Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a web-based video editor where users can: Add multiple videos Add images Add text overlays with background color Frontend sends coordinates where each element's (x,y) represents its center position. on click of the export button i want all data to be exported as one final video on click i send the data to the backend like - const exportAllVideos = async () => try const formData = new FormData(); const normalizedVideos = videos.map(video => ( ...video, startTime: parseFloat(video.startTime),  (...) -- ,
• 12:42
  FFMPEG streams from Docker container application are not playing on other computers - tipitoe Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a docker container app using dotnet core that captures and plays audio streams using ffmpeg. Since some of the URLs cannot be played directly in a web browser, audio needs to be processed by ffmpeg first. The ffmpeg output is a local url http://127.0.0.1:8080 that is sent back to a browser in an Ajax call. The audio plays perfectly in Visual Studio during development. I understand, since URL refers to localhost, there is no issue playing the audio. Unfortunately, with application being installed as docker container, the audio is being blocked. Initially, my (...) -- http://127.0.0.1:8080

24 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:02
  FFMPEG Video Multiplexer [closed] - Nader Newest 'ffmpeg' Questions - Stack Overflow
  I am a DirectShow developer, I used to build multiplexers that take 2 video inputs and generate one output, I would then use a video encoder mux to feed it the output + anothrr audio stream to generate the final video output. The multiplexer (DirectShow framework) allows me to process the input video from two sources (for example, adding effects using the two frames). How can this can be done using FFMPEG?
• 14:41
  How to create thumbnail of a video using FFMpegCore? - l.diazborg Newest 'ffmpeg' Questions - Stack Overflow
  I have a web application, where I need to create thumbnails or images taking the first frame of a video. There are already many examples of this, but I can't find anything that solves my problem. I am using this, but I'm finding it challenging, because I need to read the video and write the result using streams directly. This is my code: var videoStream = file.OpenReadStream(); var outputStream = new MemoryStream(); FFMpegArguments .FromPipeInput(new StreamPipeSource(videoStream)) .OutputToPipe(new StreamPipeSink(outputStream), options => options  (...) -- this, here

23 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:44
  ffmpeg "Time code of first frame" not making sense [closed] - Kevin Vasko Newest 'ffmpeg' Questions - Stack Overflow
  I can't seem to make sense of where ffmpeg is coming up with the "Time code of first frame" value. My original file that I am using. This video has the general timestamps of the original encoding date (aka the start time of the video the way I understanding it) and a duration of 8 min and 52s $ mediainfo GL0100002_output.mp4 General Complete name : GL0100002_output.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/avc1/mp41) File size : 93.7 MiB Duration : 8 min 52 s Overall bit rate : 1 476 kb/s Encoded date (...)
• 14:50
  reduce compression artifacts (using madVR as filter for ffmpeg?) [closed] - artifact4727 Newest 'ffmpeg' Questions - Stack Overflow
  madVR has a filter called 'reduce compression artifacts' which produces a very good quality output image on 'live playback'. I would like to permanently apply this filter to a video. Is it possible to use madVR as a filter for ffmpeg to generate a permanent output file? Thanks! madVR filter settings -- madVR filter settings
• 11:54
  Is it possible to run the ffmpeg command as a server? - Parlor311 Newest 'ffmpeg' Questions - Stack Overflow
  Instead of running the "ffmpeg" command on every request in my REST API, I want to be able to run it a single time as a server, a separate process or service, and have the REST endpoint call the server over any supported protocol. The endpoint should be able to stream the input and receive the streamed output from the server. Is this possible using the ffmpeg CLI? I can't find a single resource that covers this use case. If possible to provide the right command configuration. Thank (...)
• 08:51
  How to allocate and assign memory to AVFrame in FFMPEG application? - wangt13 Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a video player in an embedded Linux system (5.10.200), I am using FFMPEG-4.4.4 libraries to build the player. Now, I want to assign pre-allocated buffer to AVFrame to capture the decoded data. So I did followings. #define FRM_WIDTH 1920 #define FRM_HEIGHT 1080 AVFrame myframe; uint8_t *buffer; int init_frame_buffer(void) int num_bytes = av_image_get_buffer_size(AV_PIX_FMT_RGB32, FRM_WIDTH, FRM_HEIGHT, 1); buffer = (uint8_t *)av_malloc(num_bytes * sizeof(uint8_t)); av_image_fill_arrays(myframe.data, myframe.linesize, (...)
• 07:37
  HLS playback stopped with Player error: mediaError - bufferAppendError - Sumoanand Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to merge two videos together in the m3u8 manifest file. However, exactly at the point to HLS stream discontinuity, video playback stops with following error: Player error: mediaError - bufferAppendError Here is the sample m3u8 snippet: #EXT-X-PROGRAM-DATE-TIME:2025-01-23T01:23:10.200-06:00 #EXTINF:6.000 17.ts #EXT-X-PROGRAM-DATE-TIME:2025-01-23T01:23:16.200-06:00 #EXTINF:6.000 18.ts #EXT-X-DISCONTINUITY #EXT-X-KEY:METHOD=NONE #EXT-X-PROGRAM-DATE-TIME:2025-01-23T01:23:21.700-06:00 #EXTINF:6.000 10ak171685189367-007cb1c1a539825
• 03:21
  How to allocate and specify memory to AVFrame in FFMPEG application? - wangt13 Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a video player in an embedded Linux system (5.10.200), I am using FFMPEG-4.4.4 libraries to build the player. Now, I want to assign pre-allocated buffer to AVFrame to capture the decoded data. So I did followings. #define FRM_WIDTH 1920 #define FRM_HEIGHT 1080 AVFrame myframe; uint8_t *buffer; int init_frame_buffer(void) int num_bytes = av_image_get_buffer_size(AV_PIX_FMT_RGB32, FRM_WIDTH, FRM_HEIGHT, 1); buffer = (uint8_t *)av_malloc(num_bytes * sizeof(uint8_t)); av_image_fill_arrays(myframe.data, myframe.linesize, (...)

22 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:13
  Using ffmpeg as a server that handles multiple concurrent inputs [closed] - Parlor311 Newest 'ffmpeg' Questions - Stack Overflow
  I've been using "ffmpeg" as a subprocess in my Python server code where each new request runs a new instance of the command. However, I'm not sure this is the optimal way to go about it. I'm getting the impression that maybe "ffmpeg" is supposed to be executed separately as a server, and code is supposed to communicate with it using RTP or HTTP. Is this correct? The "listen" option seems to indicate so, but I can't find any resource on this use (...)
• 23:30
  How do you get ffmpeg to convert a video, parse its thumbnail and then pass it back to Elgg in the file upload function? [closed] - Orange Newest 'ffmpeg' Questions - Stack Overflow
  I know my question is very specific, but I'm using the social media base (with WAMP) Elgg to create a Flash-based video sharing site for older browsers and computers and I was wondering how does one set up ffmpeg and Elgg in tandem so Elgg gets both a thumbnail and a video converted to FLV from an MP4 file someone uploads from their computer. I'm using Elgg 1.9 and ffmpeg-20130314. I couldn't figure out how to inject ffmpeg into Elgg so I tried duplicating the upload form so it had two file upload buttons (second one for thumbnail image) but this broke the site (...)
• 22:16
  How to add a new audio (not mixing) into a video using ffmpeg? [closed] - Vetalll Newest 'ffmpeg' Questions - Stack Overflow
  I used a command like: ffmpeg -i video.avi -i audio.mp3 -vcodec codec -acodec codec output_video.avi -newaudio in latest version for adding new audio track to video (not mix). But I updated the ffmpeg to the newest version (ffmpeg version git-2012-06-16-809d71d) and now in this version the parameter -newaudio doesn't work. Tell me please how I can add new audio to my video (not mix) using ffmpeg.
• 21:04
  avcodec_find_encoder(AV_CODEC_ID_H264) returns null - Monjura Rumi Newest 'ffmpeg' Questions - Stack Overflow
  I am building an android application which will encode image captured from camera preview and later decode it. I am using ffmpeg library to encode and decode. To build static library with x264 I have used this tutorial. http://dl.dropbox.com/u/22605641/ffmpeg_android/main.html. As a source code of ffmpeg if I use the one downloaded from the link given in tutorial I can built it but can't build library if i use source code downloaded from here git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg. I have built library in ubuntu and using it in windows 7 in Eclipse. As I need only h264 (...)
• 17:15
  How to batch generate EDL (edit decision list) files for a folder of videos with different run times - DnK Newest 'ffmpeg' Questions - Stack Overflow
  How to batch generate EDL (edit decision list) files for a folder of videos with different run times? I need to skip exact amount of seconds from the start and another amount of seconds from the end. All the videos have different runtimes I can make EDL files for skipping the intro but need a way to read the video runtime and skip the last 60 or 90 seconds. This is the format for the EDL I am using with kodi 0:00:00 0:01:20. 3 So if the video is 40 mins 30 seconds the EDL generated skipping 80 seconds from the start and 90 seconds from the end should be 0:00:00 (...) -- https://kodi.wiki/view/Edit_decision_list

21 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 03:26
  Extract video clip from MP4 of exacting length [closed] - Wes Newest 'ffmpeg' Questions - Stack Overflow
  The tools I've tried so far are only gives me approximations to the start and end times that I specify. They are usually off by a few seconds. I need a tool to extract video and audio at exact start and stop times, ideally to the millisecond. It would be preferable to do so without any easily noticeable loss in video quality from the original. I would also prefer to keep the audio in the video.
• 03:58
  Decoding with QSV on ffmpeg [closed] - Grant Upson Newest 'ffmpeg' Questions - Stack Overflow
  I'm having trouble trying to get decoding working using QSV with ffmpeg on Manjaro. After installing the dependencies I've run a few commands to verify it's installed correctly. The driver in use seems to be correct. echo $LIBVA_DRIVER_NAME iHD The decoders are available. ffmpeg -decoders | grep qsv V....D av1_qsv AV1 video (Intel Quick Sync Video acceleration) (codec av1) V....D h264_qsv H264 video (Intel Quick Sync Video acceleration) (codec h264) V....D hevc_qsv HEVC video (Intel Quick Sync Video acceleration) (...)
• 12:01
  FFmpeg and reserved color primaries [closed] - Yoz Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to get thumbnails from a hevc video downloaded from https://github.com/stashapp/stash/issues/4124#issuecomment-1720057183 and it works with most recent ffmpeg 7.1 (installed via homebrew on mac) printing: ffmpeg -i input.mp4 -frames:v 1 out.jpg ffmpeg version 7.1 Copyright (c) 2000-2024 the FFmpeg developers built with Apple clang version 16.0.0 (clang-1600.0.26.4) configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.1_4 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' (...) -- https://github.com/stashapp/stash/issues/4124#issuecomment-1720057183
• 22:12
  How can I merge all the videos in a folder to make a single video file using FFMPEG - X_1 Newest 'ffmpeg' Questions - Stack Overflow
  I have a folder with 20+ video files and I need to merge them to make one long video file. How can I achieve this using FFMPEG in Python? I know the following command ffmpeg -vcodec copy -isync -i \\ "concat:file1.mp4|file2.mp4|...|fileN.mp4" \\ outputfile.mp4 But I'd rather not type all the names of the 20+ files.
• 18:00
  Ffmpeg with nginx-rtmp module requires several restarts to start working - KonstSergP Newest 'ffmpeg' Questions - Stack Overflow
  I have rtmp stream created with ffmpeg -i rtp://192.168.1.74:8000/live -vcodec libx264 -f flv rtmp://192.168.1.74:1935/picam/stream but after command Start it will not send video rtmpdump -z. If I restart ffmpeg 7-8 times it might work. There is how it look in wireshark when I want to see video from other device: wireshark I have recompiled nginx from source but it has no effect Port 1935 is opened Please help -- rtmpdump -z, wireshark
• 17:16
  How to Add Spacing Between Bars in showfreqs Visualization in FFmpeg - Jad Alaouie Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a video visualization using FFmpeg that shows an audio waveform with bars representing frequency data using the showfreqs filter. However, I would like to add some space between the bars in the bar chart-style visualization, but the showfreqs filter doesn't seem to provide a built-in option for controlling the spacing. filter_complex = ( # Create bar chart style visualization with reduced overlap for spacing "[0:a]aformat=channel_layouts=mono," + "showfreqs=mode=bar:ascale=log:fscale=log:win_size=900:size=1920x300:" + # Adjust (...)
• 12:02
  Decoding pcm_s16le with FFMPEG? - Davide Caresia Newest 'ffmpeg' Questions - Stack Overflow
  i have a problem decoding a wav file using ffmpeg. I'm new to it and i'm not quite used to it. In my application i have to input the audio file and get an array of samples to work on. I used ffmpeg to create a function that gets in input the path of the file, the position in time where to start to output the samples and the lenght of the chunk to decode in seconds. I have no reputation, so I had to make a gdrive directory where you can see the problem and the files on which I worked. Here it is: https://goo.gl/8KnjAj When I try to (...) -- https://goo.gl/8KnjAj
• 08:54
  How to get the information of bit-rate from YouTube videos? - Ashutosh Singla Newest 'ffmpeg' Questions - Stack Overflow
  I was using YouTube videos for my test and I was wondering how can I get the information of bit-rate of the played video? I used 2 methods to know the information about the bit-rate but didn't get any information. 1. Right-click on a video and choose "Stats for nerds". 2. ffmpeg -i input_video -f ffmetadata metadata.txt I don't know if by doing the right click on the video and then properties, then details would give me the correct way of showing the bit-rate. Any (...)
• 02:14
  How to use the latest version of ⓐffmpeg/ffmpeg in a React.js project? - Muzammil Raza Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a React.js project where I need to process videos in the browser using ⓐffmpeg/ffmpeg. I noticed that the package has been updated recently, and the API and functions have changed. In the older version, I used to import the package and functions like this: import createFFmpeg, fetchFile from 'ⓐffmpeg/ffmpeg'; However, in the latest version, I see that the import has changed to: import FFmpeg from 'ⓐffmpeg/ffmpeg'; and all new functions are changed I have checked in by log: I have check by console ffmpeg, it (...)
• 01:48
  ffmpeg - Record Server Desktop Without Connection - chrisp Newest 'ffmpeg' Questions - Stack Overflow
  I set up an application which uses ffmpeg to record a desktop on an Amazon AWS EC2 instance having Windows Server 2012 R2 installed. It records the desktop and puts the result into a file. This works as long as a Remote Desktop or TeamViewer connection is active for that particular Amazon AWS EC2 instance. As soon as I close the Remote Desktop and TeamViewer connection the recording stops and continues as soon as I reconnect. I assume that it's because the GPU doesn't deliver frames without a display in use. How can I make sure that frames are (...)

20 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:00
  color of soundwaves in ffmpeg [closed] - Jad Alaouie Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a video that has a background image and an audio and I want to display the soundwaves in the middle of the video and in the center I have a play button. I am done with 99% of the work but still stuck on the soundwaves colors, which is gray somehow but I want them to be white, and is it possible to make the soundwave smoother? filter_complex = ( "[0:a]showwaves=s=700x300:mode=line:colors=white[v]:draw=scale:scale=sqrt[sw_left];" "[0:a]showwaves=s=700x300:mode=line:colors=white[v]:draw=scale:scale=sqrt[sw_right];" (...)
• 21:59
  How to copy ffmpeg conversion output to file name without previous file extension [duplicate] - Tim Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to batch convert mp4 music files to m4a music files using ffmpeg on ubuntu .The command works but uses previous file extension for new name. find ./ -iname "*.mp4" type f -exec ffmpeg -i -vn -acodec cp "".m4a This command produces a new file as such: ..01_Loser.mp4.m4a but I need ..01_Loser.m4a I cannot figure out how to get file name without previous extension. Any help would be appreciated. Thanks!
• 09:37
  How to reduce the size of the .wav file exported from Pydub - Dayo Newest 'ffmpeg' Questions - Stack Overflow
  When I do a conversion using ffmpeg, I am able to convert a 3.5MB mp3 file into an ~3.5MB wav file (using ffmpeg -i input.mp3 -acodec pcm_s16le -ac 1 -ar 8000 output.wav). When I use pydub however with the below code s1 = AudioSegment.from_file("input.mp3", format="mp3") o1 = s1.export("output.wav",format="wav", parameters=["-acodec","pcm_s16le","-ac","1","-ar","8000"]) the exported wav file is 34.5MB. How can I get pydub to behave as (...)
• 05:58
  How to run encoding and decoding sequentially with ffmpeg - Minwoo Kim Newest 'ffmpeg' Questions - Stack Overflow
  After creating FFmpeg processes for encoding and decoding in C#, I tried to handle the following process. I also applied Thread.Sleep(1000/30) because I wanted to do it in 1/30 second intervals instead of 1 second. Get dummy raw data Stream to ffmpeg process for encoding Read encoded data and stream it to the ffmpeg process for decoding Outputting byte size to the console Here's my actual code, why doesn't it work? internal byte[] GetFrame(int width, int height) int frameSize = width * height * 3; byte[] frameData = new (...)

19 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:13
  Why is my FastAPI process being suspended, and how can I avoid this? - blermen Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a web app using FastAPI that uses ffmpeg to overlay audio onto video for the user. I'm running into an issue where, when I use subprocess.run(cmd), it automatically suspends the process running my FastAPI app. I can't figure out how to get the error logs to help deduce why this is, and I haven't found anything online talking about this. ⓐapp.get("/overlay-audio/") async def get_video(audio_file: str, forged_name: Annotated[str, Query()] = "default"): video_path = os.path.join(output_path, "sample.mp4") audio_path = (...)
• 13:00
  Add subtitles and storyboards to mpeg dash [closed] - ahamid555 Newest 'ffmpeg' Questions - Stack Overflow
  I need to stream a youtube video in my website and I need to do it not using the embed mode. I tried several steps and I failed to make it work completely. Please provide me any solutions for each step if you know. I tried to download the video in mpeg-dash format (with manifest and all chunk files) and I failed. Is it possible at first place? I downloaded the video using ytdlp and I transcoded the movie to mpeg-dash format using ffmpeg, but I couldn't add subtitles and storyboards during the transcode, because the vvt subtitles are not compatible with mp4 (...)
• 02:06
  How to record video and audio from webcam using ffmpeg on Windows? - Babu Newest 'ffmpeg' Questions - Stack Overflow
  I want to record video as well as audio from webcam using ffmpeg, I have used the following codes to know what devices are available: ffmpeg -list_devices true -f dshow -i dummy And got the result: ffmpeg version N-54082-g96b33dd Copyright (c) 2000-2013 the FFmpeg developers built on Jun 17 2013 02:05:16 with gcc 4.7.3 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray (...)
• 00:09
  output of ffmpeg comes out like yamborghini high music video - chip Newest 'ffmpeg' Questions - Stack Overflow
  I do this procedure when I edit a long video segment to 3 second videos, so I come up with a lot of short videos I randomly pick videos and put them in a list then I join these short videos together using concat now I get a long video again. next thing I do is segment the video 4 minute videos After processing, the videos look messed up. I don't know how to describe it but it looks like the music video yamborghini high For some reason, this only happens to videos I capture at night. I do the same process for day time footage, no problem. is (...)

18 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:57
  ffmpeg's parser_parse2 example malfunctions [closed] - Binary198 Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently using ffmpeg to parse MP4s; my current setup (with declarations and error-handling omitted) is: pkt = av_packet_alloc(); codec = avcodec_find_decoder(AV_CODEC_ID_MPEG4); parser = av_parser_init(codec->id); c = avcodec_alloc_context3(codec); avcodec_open2(c, codec, NULL); frame = av_frame_alloc(); while (!feof(args.fp_read)) data_size = fread(inbuf, 1, INBUF_SIZE, args.fp_read); data = inbuf; while (data_size > 0) ret = av_parser_parse2(parser, c, &pkt->data, &pkt->size, data, data_size, AV_NOPTS_VALUE, (...) -- examples
• 21:11
  Is there an elegant way to split a file by chapter using ffmpeg? - Kattern Newest 'ffmpeg' Questions - Stack Overflow
  In this page, Albert Armea share a code to split videos by chapter using ffmpeg. The code is straight forward, but not quite good-looking. ffmpeg -i "$SOURCE.$EXT" 2>&1 | grep Chapter | sed -E "s/ *Chapter #([0-9]+\\.[0-9]+): start ([0-9]+\\.[0-9]+), end ([0-9]+\\.[0-9]+)/-i \\"$SOURCE.$EXT\\" -vcodec copy -acodec copy -ss \\2 -to \\3 \\"$SOURCE-\\1.$EXT\\"/" | xargs -n 11 ffmpeg Is there an elegant way to do this (...) -- this page
• 18:17
  How can I use ffmpeg and youtube-dl to download the first frame of every video in a playlist? - Chi Long Qua Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to download only the first frame of every video in a large playlist on YouTube. Does anybody know how I can use ffmpeg and youtube-dl to do this?
• 16:29
  ffmpeg process 20564 successfully terminated with return code of 3436169992 - Deeroy Newest 'ffmpeg' Questions - Stack Overflow
  Trying to play a youtube video as audio through a discord bot. I ran into a 403 forbidden error and added the YDL_OPTIONS to bypass this. Now the code throws the error code 3436169992.The bot writes to the server "now playing: xxxx" but no audio is played. Any pointers? FFMPEG_OPTIONS = "before_options": "-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5", "options": "-vn -filter:a \\"volume=0.25\\"" # yt-dlp options YDL_OPTIONS = "format": "bestaudio[ext=webm][acodec=opus]/bestaudio", "noplaylist": True, "quiet": True,  (...)
• 00:21
  How to install ffmpeg on a Windows Dockerhub image? - Youssef Kharoufi Newest 'ffmpeg' Questions - Stack Overflow
  I have a program that executes a ffmpeg command to a video input, copies this video and pastes is in an output directory. Here is my code in case you would want to duplicate it : using Renderer.Models; using System; using System.IO; using System.Text.Json; using System.Threading.Tasks; public class Program public static async Task Main(string[] args) var result = new DockerTaskResult(); try // Path to the JSON input file string jsonInputPath = (...)

17 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:27
  ffmpeg fails to convert several ts files into one mp3 - Nadia Ghebreial Newest 'ffmpeg' Questions - Stack Overflow
  I'm joining several .ts files into one .mp3 file like this: import ffmpeg from 'fluent-ffmpeg' const tsDest = 'dir/file.ts' const mp3Dest = 'dir/file.mp3' const ff = ffmpeg(urls[0]) urls.slice(1).map(url => ff.input(url)) ff.on('error', function (err) logger.error('An error occurred: ' + err.message) reject(err) ) .on('end', function () return ffmpeg(tsDest) .videoCodec('libx264') .audioCodec('libmp3lame')  (...) -- https://github.com/damianociarla/node-ffmpeg/issues/101
• 10:37
  I have an application in flask where it streams a camera using ffmpeg, the problem is that I can not display the video from the camera using the GPU [closed] - Ruben Newest 'ffmpeg' Questions - Stack Overflow
  I'll put you in context, I am using flask (python) to display a camera in the browser to stream it, for this I use the following Python code: command = [ 'ffmpeg', '-loglevel', 'warning', '-rtsp_transport', 'tcp', '-i', self.config['url'], '-map', '0:v:0', # fuerzo que solo procese el video '-vf', f'fps=self.config["fps"],scale=640:360:force_original_aspect_ratio=decrease', '-c:v', 'h264_nvenc', # especificamos que (...)
• 07:29
  Error when using FFMpeg in a 64-bit .NET Framework 4.8 application with FFmpeg.AutoGen 7.0 - auetic Newest 'ffmpeg' Questions - Stack Overflow
  I'm facing an issue when trying to use FFmpeg in my .NET Framework 4.8 application (64-bit) with FFmpeg.AutoGen 7.0. When I try to call any FFmpeg method, such as ffmpeg.av_version_info() in the constructor, I encounter the next "Not supported method" error: System.NotSupportedException HResult=0x80131515 Mensaje = El método especificado no es compatible. Origen = FFmpeg.AutoGen.Bindings.DynamicallyLoaded Seguimiento de la pila: at FFmpeg.AutoGen.Bindings.DynamicallyLoaded.DynamicallyLoadedBindings.<>c.b__6_1165() at (...) -- https://github.com/Ruslan-B/FFmpeg.AutoGen

16 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:10
  How can I convert any video to h264 format? - dark1sider Newest 'ffmpeg' Questions - Stack Overflow
  I have a video with a specific name which is the date when it is written. I don't really care about the name I want to convert it to this format then delete it. So one video gets in the file I convert it then remove the old one and move the new one to different file. The folder will always be empty or only contains 1 video. I'm using Windows 10. For example, ffmpeg -i *.mp4 -an -vcodec libx264 -crf 23 Todifferentfile/output.mp4 (...)
• 11:06
  GStreamer pipeline should automatically switch back to the live stream - AD Thumar Newest 'ffmpeg' Questions - Stack Overflow
  I am using below list of version. Gstreamer-1.24.10, windows 10. I’m working on a GStreamer pipeline to handle RTSP camera streams. When the RTSP camera goes offline, I want to display a image or black screen instead of stopping the pipeline. Once the RTSP stream is back online, the pipeline should automatically switch back to the live stream. Below pipeline work but rtsp server not response that time 3 camera stop (After 19 seconds...) but 1 camera not ping that's not fulfill my requirements(My requirement is not stoping live view) I have already tried (...)
• 02:46
  ffprobe newer version detect audio codec incorrectly - alancc Newest 'ffmpeg' Questions - Stack Overflow
  I find a strange problem. I have a test video with h264 video codec and aac audio codec. It is at https://drive.google.com/file/d/1YAyz5cO0kb9r0MgahCpISR4bZ_1_n8PL/view?usp=sharing I build a ffmpeg version by myself, its version is: ffprobe version 7.0.2 Copyright (c) 2007-2024 the FFmpeg developers built with gcc 14.1.0 (Rev3, Built by MSYS2 project) configuration: --enable-shared libavutil 59. 8.100 / 59. 8.100 libavcodec 61. 3.100 / 61. 3.100 libavformat 61. 1.100 / 61. 1.100 libavdevice 61. 1.100 / 61. 1.100 libavfilter 10. 1.100 / 10. (...) -- https://drive.google.com/file/d/1YAyz5cO0kb9r0MgahCpISR4bZ_1_n8PL/view?usp=sharing
• 02:25
  extracting h264 raw video stream from mp4 or flv with ffmpeg generate an invalid stream - dhia Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to extract the video stream from an mp4 or flv h264 video (youtube video) using ffmpeg. The original video (test.flv) play without trouble with ffplay , ffprobe gives an error as follow: ffprobe version N-55515-gbbbd959 Copyright (c) 2007-2013 the FFmpeg developers built on Aug 13 2013 18:06:32 with gcc 4.7.3 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca (...)
• 01:57
  How to avoid `--enable-small` compiling option in FFmpeg causing hevc decoder’s profiles to be null and throwing an error? - zezhong zhang Newest 'ffmpeg' Questions - Stack Overflow
  When compiling FFmpeg 7.1 with the --enable-small option, I encountered an issue where the profiles field in the ff_hevc_decoder structure is set to null, causing the following error: Unknown profile bitstream. error image here (using AV_LOG_DEBUG debug level for easier analysis. This error still occurs when not using that) This error does not affect decoding itself, but it prints an annoying error message in the browser's console. Cause of the issue I guess: The --enable-small option causes the profiles field in the ff_hevc_decoder structure to be set to null (see (...) -- error image here, here
• 01:36
  Python-ffmpeg video metadata editing script - Error splitting the argument list: Option not found - maric193 Newest 'ffmpeg' Questions - Stack Overflow
  I have been updating a simple script that allows me to mass edit video files metadata (in a specific folder) and save them with a new filename (inside the same folder). I have been bouncing around different forums and decided to try python-ffmpeg. For some reason right now I am getting the below FFmpegInvalidCommand exception Error splitting the argument list: Option not found I am not quite sure what I am doing wrong here, so I am wondering if someone can give me a fresh set of eyes to determine what the problem is. Apologies in advance, there may be some leftover code that (...)

15 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:11
  Mux video & audio .m4s files into .mp4 without re-encoding? [closed] - Ace_Radom Newest 'ffmpeg' Questions - Stack Overflow
  I have two .m4s files, one video-only (video.m4s): Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\\video.m4s': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41iso5 encoder : Lavf59.27.100 description : Packed by Bilibili XCoder v2.0.2 Duration: 00:50:00.00, start: 0.000000, bitrate: 1009 kb/s Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, bt709), 1920x1080, 0 kb/s, 30 fps, 30 tbr, 16k tbn (default) Metadata: handler_name : Bento4 Video Handler vendor_id : (...)
• 06:59
  ffmpeg video to rtsp not working, ffmpeg is not reading the video frame by frame [closed] - Leroy Jeslyn Newest 'ffmpeg' Questions - Stack Overflow
  Here's the ffmpeg command: gst-launch-1.0 videotestsrc ! decodebin ! videoconvert ! videoscale \\ ! video/x-raw,width=1280,height=720 ! x264enc speed-preset=ultrafast \\ tune=zerolatency ! rtph264pay ! udpsink host=127.0.0.1 port=5000 sync=false \\ ! rtspserver service=0/test The output was: ffmpeg version 7.1-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers built with gcc 14.2.0 (Rev1, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect (...)
• 15:07
  Batch-file script to automatically add an mp3 track to the same mp4 video in ffmpeg [closed] - Poro Newest 'ffmpeg' Questions - Stack Overflow
  I have several video and audio files: file 01.mp3 file 01.mkv file 02.mp3 file 02.mkv file 03.mp3 file 03.mkv what should be the script for ffmpeg to take each video file and add an additional second audio track with the same name (file 01.mkv + file 01.mp3)? it's a main question But ultimately I need to get each video (let's say it's mp4) with 3 audio streams: mixed stream from mp3 (100%) + mkv (10% volume) - by default stream from mp3 file (100%) and last stream from mkv (100% volume) I (...)
• 20:02
  Where can I download images/videos for all kind of pixel formats? - Bukibarak Newest 'ffmpeg' Questions - Stack Overflow
  I am developing a software that use FFMPEG AVPixelFormat for images and videos. I want it to be compatible with most common pixel formats. Is there a website where I can download images/videos that have all kind of pixel formats for testing purpose (like RGBA, BGRA, YUV, Greyscale, ...) ? -- FFMPEG
• 19:33
  OpenCV on MacOS: Match Camera Index and Name - rpi_guru Newest 'ffmpeg' Questions - Stack Overflow
  I have a builtin camera and a USB webcam connected to my MacOS. Here is a result of system_profiler SPCameraDataType -xml command: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> _SPCommandLineArguments /usr/sbin/system_profiler -nospawn -xml SPCameraDataType -detailLevel full _SPCompletionInterval 1.1997909545898438 _SPResponseTime 1.2810090780258179 _dataType SPCameraDataType  (...) -- ,
• 15:05
  Is there a way to automate conversion of FLAC to ALAC while preserving tags/album artwork quality and preventing upscaling from lower bitrate files [closed] - biftheinknux Newest 'ffmpeg' Questions - Stack Overflow
  Anyone know of a batch script/ffmpeg automation script to automatically convert all FLAC files in a folder and convert it to ALAC in a specific bitrate and preserve the bitrate of files that have a lower bitrate than the one specified, as to prevent upscaling, as well as preserving all tags and having the album covers in the same resolution they were previously? I know there's ways to automate converting to another bitrate and codec, but I'm specifically trying to prevent lower bitrate files from being upscaled to the target bitrate, which I haven't been able to do (...)
• 09:55
  C++ use ffmpeg library to merge video & audio .m4s files into .mp4 without re-encoding - Ace_Radom Newest 'ffmpeg' Questions - Stack Overflow
  I have two .m4s files, one video-only (video.m4s) and one audio-only (audio.m4s). Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\\video.m4s': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41iso5 encoder : Lavf59.27.100 description : Packed by Bilibili XCoder v2.0.2 Duration: 00:50:00.00, start: 0.000000, bitrate: 1009 kb/s Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, bt709), 1920x1080, 0 kb/s, 30 fps, 30 tbr, 16k tbn (default) Metadata: handler_name : Bento4 Video (...)
• 08:16
  Failed to play MP3 audio with ffmpeg API in Linux - wangt13 Newest 'ffmpeg' Questions - Stack Overflow
  I am working on an audioplayer by using FFMPEG library, and ALSA. The following codes failed to playback the MP3 media smoothly (it is slower and noisy), I checked the FFMPEG codes and examples, but I did not the right solutions. #include #include #include #include #include #include #include int init_pcm_play(snd_pcm_t **playback_handle,snd_pcm_uframes_t chunk_size,unsigned int rate,int bits_per_sample,int channels) snd_pcm_hw_params_t *hw_params; snd_pcm_format_t format; //1. openPCM， if (0 > (...)
• 04:23
  ffmpeg difference between time and rtime, utime - nojob Newest 'ffmpeg' Questions - Stack Overflow
  When I execute a command with "-benchmark" I can get some information like rtime, utime, stime which are real time, user time and system time respectively. But I can't understand what are they exactly? Because as I know, the real time is the wall clock which means the time that the whole process needs. And there is another time at the end of the command. Like below: What is the difference between them? time: 00:00:00.16 rtime: (...) --
• 04:50
  Nginx - RTMP module - VLC wont start - Diana Sari Newest 'ffmpeg' Questions - Stack Overflow
  Why my vlc only show background colour ? did i miss something important ? Im running Nginx with RTMP module on Linux DESKTOP-RJHVE83 5.15.167.4-microsoft-standard-WSL2 #1 SMP x86_64 GNU/Linux Kali release : 2024.4 (kali-rolling) WSL on Windows 10 Pro Screenshot of my VLC /etc/nginx/nginx.conf i add this from the default : rtmp server listen 1935; chunk_size 4096; allow publish 127.0.0.1; deny publish all; application live live on; record off; push rtmp://127.0.0.1/live/stream;  (...) -- Screenshot of my VLC, https://www.hostinger.com/tutorials/how-to-set-up-a-streaming-server, https://www.digitalocean.com/community/tutorials/how-to-set-up-a-video-streaming-server-using-nginx-rtmp-on-ubuntu-20-04

14 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:36
  Why is ffmpeg warning "Guessed Channel Layout for Input Stream #0.0 : mono"? [closed] - chasep255 Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg to read and write raw audio to/from my python script. Both the save and load commands I use produce the warning "Guessed Channel Layout for Input Stream #0.0 : mono"? This is despite that fact that I am telling ffmpeg using -ac 1 before both the input and output that there is only one channel. I saw some other answers where I should set -guess_layout_max 0 but this seems like a hack since I don't want ffmpeg to guess; I am telling it exactly how many channels there are with -ac 1. It should not need to make any guess. My save command is formatted as follows (...)
• 23:16
  Range input breaks ffmpeg when seeking in Chromium - Tania Rascia Newest 'ffmpeg' Questions - Stack Overflow
  I'm getting the following error erratically when I seek with the range input in a React app, which renders the input unusable until refresh: PIPELINE_ERROR_READ: FFmpegDemuxer: demuxer seek failed The only occurrence of this error I can find online is in the Chromium source code. <-- linked file goes directly to the line where the error exists. I can't replicate the error in Firefox. Nothing out of the ordinary is going on with the input. const handleScrub = (event) => const newTime = event.target.valueAsNumber  (...) -- Chromium source code, source code
• 20:26
  The start timestamp is non zero-when remuxing using libavformat - animaonline Newest 'ffmpeg' Questions - Stack Overflow
  I'm remuxing a live rtmp stream using libavformat's sample remuxing.c my code is almost identical to that sample, but it also decodes the audio and video in order to render a preview using SDL, that works great. My application has a a button to start recording, and whenever the user presses it, the main loop will remux to a file, in a typical situation a user will wait a couple of seconds before initiating a recording, that is where the problems arise, the resulting video has non-zero start time. (I don't see these problems if I manually initiate the recording (...) -- remuxing.c
• 19:14
  Pydub FFMPEG issue [closed] - Nikolai van den Hoven Newest 'ffmpeg' Questions - Stack Overflow
  I am attempting to use FFMPEG with Pydub to create a program that chops .mp3 files into different words, each contained in their own .mp3 file, but when I run the script I am getting the following error: PS C:\\Users\\nik> & C:/Users/nik/AppData/Local/Microsoft/WindowsApps/python3.12.exe "d:/Python/Word Splitter.py" C:\\Users\\nik\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\\LocalCache\\local-packages\\Python312\\site-packages\\pydub\\utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work  (...) -- My PATH variable on Windows 11
• 21:23
  Error submitting packet to decoder: Invalid data found when processing input FFMPG Python - ilavarasan Newest 'ffmpeg' Questions - Stack Overflow
  My code outputs the following error while I read a .wav file using ffmpeg python. Could someone please advise. import ffmpeg import subprocess def find_corrupt_frames(mxf_file_path): corrupt_frames = [] command = [ 'ffmpeg', '-v', 'error', # Show only error messages '-i', mxf_file_path, # Input file '-f', 'null', # Output format (null for no actual output) '-' # Use dash to indicate no output file ] try: # Execute the ffmpeg command process = (...)
• 17:26
  can ffmpeg videos command be used for images? [closed] - Mary Newest 'ffmpeg' Questions - Stack Overflow
  I came across this question but I see it is for videos only . Does anyone knows if this command, from the above post, ffmpeg -r VIDEOFPS -i VIDEO -r VIDEOFPS -i VIDEO -lavfi blend=all_mode=grainextract -c:v libx264 -crf 0 -an ./out.mp4 can be used for images ?, to extract the difference between 2 images in an output image?
• 17:12
  How to extract audio from a video in Flutter? - Mohammed Bekele Newest 'ffmpeg' Questions - Stack Overflow
  I have an image picker in Flutter to get the video from the device, and then I created a function to extract the audio using ffmpeg_kit_flutter package. Future _convertVideoToAudio() async if (_pickedVideo != null) bool? permissionGranted = await _requestStoragePermission(); if (permissionGranted != true) print("Storage permission denied."); return; String videoPath = _pickedVideo!.path; _outputPath = await getOutputFilePath(); // Get platform-specific path try // Ensure the output directory exists await (...)
• 17:05
  how to compare 2 images using ffmpeg? [closed] - Mary Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to compare two png/jpg images using ffmpeg commands in a Mac terminal from ffmpeg-image-diff location , but I have lots of errors . I have tried variant1 : ffmpeg -i image1.jpg -I image2.jpg -filter_complex "[0:v]format=yuv420p[main];[1:v]format=yuv420p[ref]; [main][ref]psnr=stats_file=psnrs.txt:shortest=1" -f null - variant2: ffmpeg -i image1.png -i image2.png -filter_complex [1:v]negate[inv],[0:v][inv]mix=inputs=2 outdiff.png , but I'm getting every time Error opening input file image1.jpg. Error opening input files: No such (...) --
• 12:32
  VLC and ffplay not receiving video from RTMP stream on Nginx - Ekobadd Newest 'ffmpeg' Questions - Stack Overflow
  I'm streaming via OBS 30.1.2 to an RTMP server on a digitalocean droplet. The server is running on nginx 1.26.0 using the RTMP plugin (libnginx-mod-rtmp in apt). OBS is configured to output H.264-encoded, 1200kbps, 24fps, 1920x1080 video and aac-encoded, stereo, 44.1kHz, 160kbps audio. Below is the minimal reproducible example. When I attempt to play the rtmp stream with ffplay or VLC, it's a random chance whether I get video or not. Audio is always fine. The output from ffplay or ffprobe (example below) occasionally does not show any video stream. rtmp  (...)
• 12:50
  difference overlay filter ffmpeg like photoshop/affinity photo - Owen Quinlan Newest 'ffmpeg' Questions - Stack Overflow
  In photoshop and affinity photo there is a nice overlay filter that basically subtracts the overlaying layer from the one bellow to make a "difference map" Example: Base image: Screenshot Mario Kart 1 Overlaying image: Screenshot Mario Kart 2 Resulting output: Diff from two screenshots This is an example diff of overlaying a PNG with a JpegXL(I think) compressed image and then brightened: Diff generated from image compression Location of filter in photoshop: Photoshop screenshot Is there anyway to accomplish this with a filter in (...) -- Screenshot Mario Kart 1, Screenshot Mario Kart 2, Diff from two screenshots, Diff generated from image compression, Photoshop screenshot
• 13:43
  How to import and use FFmpegInteropX.FFmpegUWP? - Boris Newest 'ffmpeg' Questions - Stack Overflow
  I am writing a WinUI3 app. I need it to play a .mkv video file using MediaPlayerElement control. Out of box, .mkv file types are not supported. So I came upon a package FFmpegInteropX.FFmpegUWP (current v5.1.100) and installed it to the solution via Visual Studio NuGet Package Manager. The installation went fine and the package is definitely part of the project: The problem I have is that when I type using FFmpegInteropX; it is not recognized and I cannot use it. I've noticed there is also a FFmpegInteropX package (so without the ".FFmpegUWP" part) and I tried installing (...) -- FFmpegInteropX.FFmpegUWP
• 10:05
  Using ffmpeg to change framerate - J Brand Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a video clip (MP4, yuv420p) from 30 fps to 24 fps. The number of frames is correct so my output should change from 20 minutes at 30fps to 25 minutes at 24fps. Everything else should remain the same. Try as I might everything I try with ffmpeg converts the frame rate but changes the number of frames to keep the same duration or changes the duration without altering the framerate. So I have been typically trying things like; ffmpeg -y -r 30 -i seeing_noaudio.mp4 -r 24 seeing.mp4 (I'm doing this on windows but normally (...)
• 04:05
  PHP/ffmpeg (Windows 7): - Permission Denied. Tried everything, but still doesn't work - user365465 Newest 'ffmpeg' Questions - Stack Overflow
  I have a command-line PHP script that, when given the folder name as an argument when executing the script, will find all images in said folder and resize them using FFmpeg. Problem is, I always get a Permission Denied error in FFmpeg when it attempts to get at the files within the folder. This is while being on Windows 7. The big problem is that I've tried every solution that keeps popping up on the interwebs when I search for how to fix it. I've changed the settings in Avast!, did the attrib command (both as normal and "Run as Administrator") to unmark as read-only, (...)

13 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:21
  ffmpeg compare 2 images Mac - Mary Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to compare two png/jpg images using ffmpeg commands in a Mac terminal from ffmpeg-image-diff location , but I have lots of errors . I have tried variant1 : ffmpeg -i image1.jpg -I image2.jpg -filter_complex "[0:v]format=yuv420p[main];[1:v]format=yuv420p[ref]; [main][ref]psnr=stats_file=psnrs.txt:shortest=1" -f null - variant2: ffmpeg -i image1.png -i image2.png -filter_complex [1:v]negate[inv],[0:v][inv]mix=inputs=2 outdiff.png , but I'm getting every time Error opening input file image1.jpg. Error opening input files: No such (...) --
• 12:56
  ffmpeg write adpcm raw file [closed] - Phil Schatzmann Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a wav file with ffmpeg to a adpcm raw file. I tried using ffmpeg -i original.wav -map 0 -c:a adpcm_ima_wav ima_wav.raw But I am getting the following error message: Unable to find a suitable output format for 'ima_wav.bin I similar question has already been aswered here Unable to find a suitable output format for 'ffmpeg' - ffmpeg: Invalid argument But this does not apply for my case
• 02:15
  Getting error spawn ffmpeg ENOENT aws lambda - nemerem Newest 'ffmpeg' Questions - Stack Overflow
  I have being trying to debug but to no avail, I've done everything on the internet. I Used WSL (Ubuntu) - Error: spawn usr/bin/ffmpeg ENOENT. I Used windows - Error: spawn path/to/ffmpeg.exe ENOENT. I had to SAM deploy --guide and then added a lambda layer on aws console. Moved Ffmpeg file to my project root folder also ENOENT. Ffmpeg exists in those parts, "path/to/ffmpeg -version" prints version/other info. I gave permissions using chmod +x, I used AI too. 3days of struggle import spawn from 'child_process'; import ffmpeg (...) -- Image of my Project Structure
• 02:48
  Not able to pipe gstreamer output into ffmpeg - Henry Soang Newest 'ffmpeg' Questions - Stack Overflow
  has anybody gotten gstreamer to successfully pipe it's video output into ffmpeg? I've tried playing with /dev/stdout and I keep getting errors: gst-launch -e v4l2src device=/dev/video0 \\ ! 'video/x-raw-yuv,width=1920,height=1080,framerate=5/1' \\ ! nv_omx_h264enc quality-level=2 ! mp4mux \\ ! filesink location=/dev/stdout \\ | ffmpeg -y -i - -codec copy -f flv test.flv ... [aac ⓐ 0xebc4c0] Could not find codec parameters for stream 0 (Audio: aac (Main), 7.1, fltp, 1351 kb/s): unspecified sample rate Consider increasing the value (...)

12 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:21
  Using FFmpeg in .net? - daniel Newest 'ffmpeg' Questions - Stack Overflow
  So I know its a fairly big challenge but I want to write a basic movie player/converter in c# using the FFmpeg library. However, the first obstacle I need to overcome is wrapping the FFmpeg library in c#. I've downloaded ffmpeg but couldn't compile it on Windows, so I downloaded a precompiled version for me. Ok awesome. Then I started looking for C# wrappers. I have looked around and have found a few wrappers such as SharpFFmpeg (http://sourceforge.net/projects/sharpffmpeg/) and ffmpeg-sharp (http://code.google.com/p/ffmpeg-sharp/). First of all, I wanted to use (...) -- http://sourceforge.net/projects/sharpffmpeg/, http://code.google.com/p/ffmpeg-sharp/

11 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:14
  FFmpeg Encoded Date + Tagged Date how to remove [closed] - Martin Newest 'ffmpeg' Questions - Stack Overflow
  Encoded Date + Tagged Date how to remove because I've been sitting for 2 days and none of the commands I found work. Thanks for your help So that there is no information about the date the file was encoded, thank you very much for your help
• 20:57
  Run ffmpeg audio under Windows with Flutter - Chris Newest 'ffmpeg' Questions - Stack Overflow
  I'd like to stream audio comming from my microphone in my flutter app in the windows desktop version. Since there is no library that seems to do such thing while supporting windows desktop app, I have tried using Process like this: // Start the FFmpeg process to capture audio ffmpegProcess = await Process.start( 'ffmpeg', [ '-f', 'dshow', // Specify DirectShow input for Windows '-i', 'audio="$selectedMic"', // Input audio device (selected mic) '-f', 'wav', // Set audio (...)

10 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:35
  Read a text file line-by-line (each line as an array), run bash command with array elements, then loop to the next line in the text file - xiaohouzi Newest 'ffmpeg' Questions - Stack Overflow
  I'm using immich to manage my media library with photos and videos but appropriate video thumbnails are black or do not have an appropriate thumbnails for my family to view. As a test, I decided to manually recreate the thumbnails and then update appropriate thumbs files in the exact directory; replacing the auto-generated ones by Immich using ffmpeg. The following script works fine but one by one will take forever. #!/bin/bash file=(formula1 "aust_gp_00'23'41_2022_1858658849.mp4" f2dfse3-34gd-23ff-6hdd-p3h4kk/a3/10/a399-dj88-ah29 00:00:30.000) # create (...)
• 17:31
  Generate ffmpeg thumbnail from stream in Node.js - Blareprefix Newest 'ffmpeg' Questions - Stack Overflow
  Im using node.js together with ffmpeg to receive an rtmp-stream and output this into m3u8-format. [ '-y', '-fflags', 'nobuffer', '-analyzeduration', '1000000', '-i', 'rtmp://localhost:1935/live/ANMZJ2ZRUiMhKaAoygRXwAfHe', '-c:v', 'copy', '-c:a', 'aac', '-f', 'tee', '-map', '0:a?', '-map', '0:v?', '-y',  (...)
• 17:32
  Generate video thumbnail using ffmpeg; Grab from RTMP server - floatleft Newest 'ffmpeg' Questions - Stack Overflow
  I have research how to generate a video thumbnail user FFMPEG like so: ffmpeg -i myfile.flv -vcodec mjpeg -vframes 1 -an -f rawvideo -s 640x480 foo.jpg But how can I generate a thumbnail when the file is on another server? Specifically a RTMP server? for example: rtmp://foo.rtmphost.com/videos
• 11:27
  How to suspend and resume ffmpeg during encoding? - guidop21 Newest 'ffmpeg' Questions - Stack Overflow
  I am using FFMPEG to split a video into many 60 second video clips using a camera with the following command: ffmpeg -f dshow -rtbufsize 2000M -i video="Game Capture HD60 S (Video) (#01)" -preset slow -codec:a libfdk_aac -b:a 128k -codec:v libx264 -pix_fmt yuv420p -b:v 1000k -minrate 500k -maxrate 2000k -bufsize 2000k -vf scale=854:480 -f segment -segment_time 60 -reset_timestamps 1 -flush_packets 1 "C:\\Program Files (x86)\\ffmpeg\\test\\clips\\testfile_%02d.mp4" I would also like to be able to do suspend and resume. How can I do? Thank (...)
• 09:54
  Python extract wav from video file - xolodec Newest 'ffmpeg' Questions - Stack Overflow
  Related: How to extract audio from a video file using python? Extract audio from video as wav How to rip the audio from a video? My question is how could I extract wav audio track from video file, say video.avi? I read many articles and everywhere people suggest to use (from Python) ffmpeg as a subprocess (because there are no reliable python bindings to ffmpeg - the only hope was PyFFmpeg but i found it is unmaintaned now). I don't know if it is right solution and i am looking for good one. I looked to gstreamer and found it nice but (...)
• 11:15
  How to save stream with ffmpeg to chunks, But in temporary name and change the name after to const - Eliya Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to record IP camera and I save every 10 minutes to mp4 file. This is my code: ffmpeg -rtsp_transport tcp -i "rtsp://$user_name:$passwordⓐ$IP:$port/cam/realmonitor?channel=1&subtype=1" -c copy -map 0 -reset_timestamps 1 -f segment -segment_time 600 -strftime 1 "%Y-%m-%d__%H:%M:%S.mp4" Is there a way to save the file in temporary name until 10 minutes is done? I mean when the recording of 10 minutes didn't end the suffix will be bla.temp and when the recording of the 10 minutes is over, ffmpeg will change the suffix to .mp4? is that (...)

9 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:54
  Error initializing FFmpegKit: "TypeError: Cannot read property 'getLogLevel' of null" in React Native - Md Monirozzaman khan Newest 'ffmpeg' Questions - Stack Overflow
  I'm developing a React Native application where I need to process videos using the ffmpeg-kit-react-native library. However, I'm encountering an issue during the initialization of FFmpegKitConfig. The error message is: ERROR Error initializing FFmpegKit: [TypeError: Cannot read property 'getLogLevel' of null] Here is my App.js code import React, useState, useEffect from 'react'; import StyleSheet, Text, View, TouchableOpacity, Alert, Dimensions, ScrollView, LayoutAnimation, UIManager, Platform from (...)
• 10:52
  Video - Could not find tag for codec wavpack in stream #1, codec not currently supported in container Could not write file MKV to MP4 with FFmpeg - Theagames10 Newest 'ffmpeg' Questions - Stack Overflow
  Trying to convert an hour long MKV file into an MP4 using FFmpeg, but during the conversion process it keeps giving me this error: Could not find tag for codec wavpack in stream #1, codec not currently supported in container Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument I have tried to use other converters, but they all have file size limits, It takes to long to convert with Handbrake and VLC. I tried to search for some kind of answer on google, but there has been no forum posts anywhere for a solution to this kind (...)
• 05:38
  ffmpeg version conflict with other packages - susanna Newest 'ffmpeg' Questions - Stack Overflow
  I use rpmbuild on kylin OS which is kind of linux system. The strange error message is attached below. Based on my limited knowledge, I do not know the root cause. Can you provide some suggestions? Thanks. Requires(interp): /bin/sh Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1 Requires(post): /bin/sh Requires: /bin/bash /bin/sh /usr/bin/bash ld-linux-x86-64.so.2()(64bit) ld-linux-x86-64.so.2(GLIBC_2.3)(64bit) libGL.so.1()(64bit) libX11.so.6()(64bit) libXext.so.6()(64bit) (...)

8 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:54
  hls playlist where the #EXTINF tag doesnt match actual segment duration? [closed] - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  "The EXTINF tag specifies the duration of a Media Segment." But what should happen if the actual file duration does not match that tag? I tried to edit the m3u8 file of my playlist and change the EXTINF tags so it will be smaller than the actual file duration, and also sometimes changed it so it will be bigger than the duration. In both cases the result stayed the same and simply the actual segment duration was played, regardless of the EXTINF tag. So what is the actual need of this tag? seems that simply the file is being (...)
• 09:37
  FFMPEG convert videos using Automator [closed] - FilipPro Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use Apple Automator (v2.10, Sonoma 14.7.1, Apple M1) to select a folder and convert all MP4 files to WMV files using FFMPEG. The user is supposed to export files from Final Cut Pro in MP4, put them in a folder of their choice and then start the automation by having to select the folder where MP4 files are saved. FFMPEG is installed via Homebrew and the installation folder was found via "which ffmpeg" ( /opt/homebrew/bin/ffmpeg ). This is the worklow I currently have: Full Automator Workflow Run AppleScript on run input, (...) -- Full Automator Workflow
• 07:32
  FFmpeg h264_v4l2m2m encoder changing aspect ratio from 16:9 to 1:1 with black bars - LycoReco2007 Newest 'ffmpeg' Questions - Stack Overflow
  When switching from libx264 to h264_v4l2m2m encoder in FFmpeg for YouTube streaming, the output video's aspect ratio changes from 16:9 to 1:1 with black bars on the sides, despite keeping the same resolution settings. Original working command (with libx264): ffmpeg -f v4l2 \\ -input_format yuyv422 \\ -video_size 1280x720 \\ -framerate 30 \\ -i /dev/video0 \\ -f lavfi \\ -i anullsrc=r=44100:cl=stereo \\ -c:v libx264 \\ -preset ultrafast \\ -tune zerolatency \\ -b:v 2500k \\ -c:a aac \\ -b:a 128k \\ -ar 44100 \\ -f flv (...)

7 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:02
  ffmpeg transcoding from mkv to webm using av1_vaapi [closed] - user248979 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert HEVC encoded mkv videos into webm files using GPU acceleration. So far I've tried ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i "input.mkv" -c:v av1_vaapi output.webm the result audio works but the video is completely garbled. I've tried a different way: ffmpeg -vaapi_device /dev/dri/renderD128 -i input.mkv -vf 'format=nv12,hwupload' -c:v av1_vaapi output.webm But the result is the same. What am I doing wrong? vainfo vainfo: VA-API version: 1.22 (libva (...)
• 20:04
  FFmpeg with yt-dlp in an android environment - Pastori Newest 'ffmpeg' Questions - Stack Overflow
  i am currently working on an android application that initially needs to install a youtube video, here's what am using in my development environment: android studio, chaquopy, python (yt-dlp) and gradle groovy for builds, now i am facing a problem with yt-dlp and the error states the following : "ERROR: You have requested merging of multiple formats but ffmpeg is not installed. Aborting due to --abort-on-error", now clearly yt-dlp requires ffmpeg to work properly and i have looked into it and found FFmpegKit i got the latest android archive and i included it in my build, and it (...)
• 12:06
  Moviepy python images and text with colour background video - sjpatel Newest 'ffmpeg' Questions - Stack Overflow
  I trying to create video like below using Moviepy python.? Video - https://assets.json2video.com/examples/marketing/slide-text-right.mp4 Is this possible using Moviepy python? I can't use FFMPEG because it not supported on my server. from moviepy.editor import * # Load the image img_clip = ImageClip("your_image.png") # Set the duration of the image clip img_clip = img_clip.set_duration(5) # Resize the image if necessary img_clip = img_clip.resize(height=1080) # Keep the height consistent # Define your text text = (...) -- https://assets.json2video.com/examples/marketing/slide-text-right.mp4
• 11:04
  ffmpeg, stretch audio to x seconds - Max Doumit Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make an audio file be exactly x second. So far i tried using the atempo filter by doing the following calculation Audio length / desired length = atempo. But this is not accurate, and I am having to tweak the tempo manually to get it to an exact fit. Are there any other solutions to get this work ? Or am I doing this incorrectly? My original file is a wav file, and my output in an mp3 Here is a sample command ffmpeg -i input.wav -codec:a libmp3lame -filter:a "atempo=0.9992323" -b:a 320K output.mp3 UPDATE: I was able to (...)
• 12:48
  AWS Lambda function (node.js) can't find installed ffmpeg - coding_delight Newest 'ffmpeg' Questions - Stack Overflow
  thanx in advance! My lambda function shall transcode videos. I install the function via a Docker image and ECR. Inside the lambda function ffmpeg cant be executed/ found. Dockerfile: As base image I use the AWS node base image. I install ffmpeg on that image and execute it successfully after installation "RUN ffmpeg -version" (works) I then copy the ffmpeg to /usr/local/bin. Inside the lambda function I try to run the same command "ffmpeg -version" via exec() but there I get "command not found". the command "pwd" returns the path "/var/task" Any (...)
• 05:55
  How to extract frames in sequence as PNG images from ffmpeg stream? - JamesJGoodwin Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a program that would capture my screen (a game to be precise) using ffmpeg and stream frames to NodeJS for live processing. So, if the game runs at 60 fps then I expect ffmpeg to send 60 images per second down to stdout. I've written a code for that import spawn as spawnChildProcess from 'child_process'; const videoRecordingProcess = spawnChildProcess( ffmpegPath, [ '-init_hw_device', 'd3d11va', '-filter_complex', 'ddagrab=0,hwdownload,format=bgra',  (...)

6 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:35
  Font Size Mismatch When Using Fallback Fonts in FFmpeg ASS Subtitles - Mostafa Fathi Newest 'ffmpeg' Questions - Stack Overflow
  I’m facing an issue with font size mismatch in ASS subtitles rendered by FFmpeg when combining English text with Arabic or Persian characters. Steps to Reproduce: 1.Subtitle File: Here’s an example of the ASS subtitle file: [Script Info] Title: Generated ASS ScriptType: v4.00+ WrapStyle: 2 ScaledBorderAndShadow: yes YCbCr Matrix: none PlayResX: 1920 PlayResY: 1080 [V4+ Styles] Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, (...) -- ,
• 17:29
  Does ffprobe output depend on user's locale? - pete Newest 'ffmpeg' Questions - Stack Overflow
  If I run ffprobe on a file to get a duration, and the duration is 32.85, won't it return "32,85" if the user's computer is in French? If so, what's the best way to handle this? I could not find any info about this in the documentation.
• 13:24
  Issue with MJPEG stream playback speed when encoding with FFmpeg - Arciiix Newest 'ffmpeg' Questions - Stack Overflow
  I'm working with a MJPEG stream source Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn I want to capture this stream and save it to an MP4 file using FFmpeg, but I am running into a weird issue. The only way it works fine is when I just copy the stream without reencoding and using wallclock as timestamps (cmd 1): ffmpeg -use_wallclock_as_timestamps 1 -i "http://IP/video/1280x720" -c:v copy output_good.mp4 However, when I try encoding the stream with libx264, the playback speed of the (...) -- https://www.youtube.com/watch?v=PF0fuCu7Xao
• 06:51
  Failed to use h264_v4l2 codec in ffmpeg to decode video - wangt13 Newest 'ffmpeg' Questions - Stack Overflow
  I am working on an embedded Linux system (kernel-5.10.24) and I want to use ffmpeg libraries (ffmpeg-4.4.4) to do video decoding. The C code is as follows, it uses h264_v4l2m2m decoder to decode the video, #include #include #include #include #include #include #include int main(int argc, char *argv[]) if (argc < 3) printf("Usage: %s \\n", argv[0]); return -1; const char *input_file = argv[1]; const char *output_file = argv[2]; AVFormatContext *fmt_ctx = NULL; AVCodecContext *codec_ctx = (...)
• 07:09
  Accessing ffprobe with pydub - KindOfGuy Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get https://github.com/jiaaro/pydub working with the ffprobe and ffmpeg decoders on Alpine Linux 3.7.3 in Docker. Error is: /usr/lib/python3.6/site-packages/pydub/utils.py:198: RuntimeWarning: Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work warn("Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning) [Errno 2] No such file or directory: 'ffprobe': 'ffprobe' I have added ffprobe and the related ffmpeg package with poetry and all seems well:  (...) -- https://github.com/jiaaro/pydub

5 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:35
  Cutting multimedia files based on start and end time using ffmpeg - Kalaiyarasan Newest 'ffmpeg' Questions - Stack Overflow
  I tried to cut the video using the start and end time of the video by using the following command: ffmpeg -ss 00:00:03 -t 00:00:08 -i movie.mp4 -acodec copy -vcodec copy -async 1 cut.mp4 By using the above command I want to cut the video from 00:00:03 to 00:00:08. But it is not cutting the video between those times instead of that it is cutting the video with first 11 seconds.

4 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:46
  Java shelling out to FFMPEG not running nor giving error - Todd Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a Podcast downloader where I want to be able to download one or more podcasts then run them through FFMPEG. It does run when I run the program in Windows. It does not run when I run the program in Linux - Meaning FFMPEG may or may not have been called. I have no way of knowing. I get a -1 back from process.waitfor() but no error in my Java logs and no entries at all in the ffmpeg.log file. And there is no file in the processed file directory that FFMPEG would have created. It does run in Linux if I run the same command that fails in Java from the command (...)

3 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:23
  How to apply dynamic watermarking for users watching video in real-time? [closed] - Barun Bhattacharjee Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a video streaming project where I need to apply a dynamic watermarking (e.g., username and email) in real-time for security purposes. The video is being streamed in DASH format, and the segment files are in .m4s format generated via FFmpeg. Challenges: Is it possible to directly apply dynamic watermarking to .m4s segment files? Video segments are generated using FFmpeg with the following command: ffmpeg .input(video_path) .output(mpd_path, format='dash', map='0', video_bitrate='2400k',  (...)
• 09:41
  avio_open2 fails randomly for RTMPS Facebook live streaming - Usama Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to re stream a video to Facebook RTMPS endpoint and , facing an issue specifically with Facebook's RTMPS endpoint . I have tried with linkedin RTMPS endpoint and its working fine , but Facebook end point some times works and fails some times its totally random . The avio_open2 call sometimes fails randomly, returning a -5 error. This only seems to happen with the Facebook endpoint .on ffmpeg log side I see that the handshake was successful , I don't understand the reason for failure here. (i am running in multithreaded environment ) int ret = (...)
• 04:48
  Handling RTSP Camera Offline with Image showing issue in GStreamer - AD Thumar Newest 'ffmpeg' Questions - Stack Overflow
  I am using below list of version. Gstreamer-1.24.10, windows 10. I’m working on a GStreamer pipeline to handle RTSP camera streams. When the RTSP camera goes offline, I want to display a image instead of stopping the pipeline. Once the RTSP stream is back online, the pipeline should automatically switch back to the live stream. Do let me know If you can solve this issue with ffmpeg. I have already tried pipeline belowed: gst-launch-1.0 compositor name=comp sink_0::xpos=0 sink_0::ypos=0 sink_1::xpos=640 sink_1::ypos=0 sink_2::xpos=1280 sink_2::ypos=0 ! (...)

2 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:08
  Unknown key_frame and pict_type of encoded H.266 video stream [closed] - Ragdoll Car Newest 'ffmpeg' Questions - Stack Overflow
  I converted a sample video from H.264 into H.266 using FFmpeg (with the VVenC support) with such a command: ffmpeg -i input.mp4 -c:v libvvenc -b:v 2600k -preset faster output.mp4 Then I checked the content of the encoded frames with such a command: ffprobe output.mp4 -show_frames It occurs that for all of the frames key_frame=0 and pict_type=?, so it looks like FFmpeg does not know anything about intra frames of H.266 video stream. So my question is: is it supported to distinguish between I-frames and P/B-frames when using H.266 codec? I (...)
• 17:25
  How to export FFMPEG into my Python program? - user11353612 Newest 'ffmpeg' Questions - Stack Overflow
  I wrote a Python program for Windows 10 which converts audio files from any supported format to .flac, and it uses FFMPEG to do the encoding. FFMPEG is installed on my computer, so there isn't any problem when I run the program on my computer. I used PyInstaller to export my program in .exe, and now I want to include FFMPEG in the distribution so people don't have to download it separately to run my script. Can I wrap/include FFMPEG into my program, and automatically install/use it when required? (...)
• 15:38
  FFMPEG Python: Encountered scale(1920, 1080) with multiple outgoing edges with same upstream label None; a `split` filter is probably required - Lysander Cox Newest 'ffmpeg' Questions - Stack Overflow
  Here is the code in question: for comment in thread['comments']: commentClips += fragmentConcat(comment, filePrefix) staticClip = ffmpeg.input('assets/static.mp4') commentClips.append(staticClip .filter('setsar', 1, 1) .filter('scale', 1920, 1080) ) commentClips.append(staticClip.audio) This code generates the following error: ValueError: Encountered scale(1920, 1080) with multiple outgoing edges with same upstream label None; a `split` filter is probably required I have tried (...)
• 15:18
  Convert .png segment of HLS to mp3 - Maxim Newest 'ffmpeg' Questions - Stack Overflow
  I have url of HLS: https://9str-m3u8-play-021024.playm4u.xyz/m3u8/tp1-rdv1/1080/642bce856edd7cab511931a2/647af249adaf446b461a374e/53616c7465645f5f3ec139a78aff102a8e3a3c62ae8f3826f32bf6f19ea4b1fb/1735825697/2a2415eaeec82cbf16cebbf974a372e0 It contains links to segments: #EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:6 #EXT-X-PLAYLIST-TYPE:VOD #EXTINF:6, https://9str-rd.playm4u.xyz/9str-rd-tp1v1/1080/642bce856edd7cab511931a2/cdebe91fd08cdb6d79827cca6c41007927d1e7a824e88d90e17fc925d914a006873ed08c7ecb7107e7a72b810e66a2cf/0292b734e3b0d7dacb586869beac1f91281543d90d -- https://9str-m3u8-play-021024.playm4u.xyz/m3u8/tp1-rdv1/1080/642bce856edd7cab511931a2/647af249adaf446b461a374e/53616c7465645f5f3ec139a78aff102a8e3a3c62ae8f3826f32bf6f19ea4b1fb/1735825697/2a2415eaeec82cbf16cebbf974a372e0, https://i.sstatic.net/pajvO7fg.png, https://drive.google.com/file/d/1i-LERY8kEYVZgS8mX9mCoMWd3To4Fk2T/view?usp=sharing, https://ww2.movie123.club/watch/tci7-pulp-fiction-1994-movie-online-free-123movies.html
• 13:41
  I want it to do the ffmpeg convert while the application continues to run - Mustafa Gemsiz Newest 'ffmpeg' Questions - Stack Overflow
  Downloading with yd-dl.exe is successful, but it does not convert the downloaded video to mp4 with ffmpeg. When I stop compiling the project in visual studio, it converts the ffmpeg file to mp4. using System; using System.Diagnostics; using System.IO; using System.Threading.Tasks; using System.Windows.Forms; namespace YouTube_MP4_indir public partial class Form1 : Form public Form1() InitializeComponent(); pictureBox2.Visible = false; pictureBox3.Visible = false; private async void (...)

1er janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:59
  Stream H264 raw data on RTSP server - Aitazaz Newest 'ffmpeg' Questions - Stack Overflow
  I have H264 hex string data saved in a list. The data is in correct format as it is being received, I am trying to stream it to RTSP server. I have stream the data in realtime as it is from a dashcam. The RTSP server is deployed but when I stream frames to it, the connection is created and then ends in an instant (does not last for a second) The code is mentioned below which performs this streaming task. def h264_stream_to_rtsp(data_list, rtsp_url): try: ffmpeg_command = [ "ffmpeg", "-f", "h264", "-i", "-", "-vcodec", "libx264",  (...)

31 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:53
  Getting the file name of downloaded video using yt-dlp - LT_Orange Newest 'ffmpeg' Questions - Stack Overflow
  I'm intending to use yt-dlp to download a video and then cut the video down afterward using ffmpeg. But to be able to use ffmpeg I am going to have to know the name of the file that yt-dlp produces. I have read through their documentation but I can't seem to find a way of getting the file name back into my program.
• 08:00
  MOV to ACVHD conversion via Spring Boot and FFmpeg leads to file system error - epicUsername Newest 'ffmpeg' Questions - Stack Overflow
  I am experiencing an issue on a personal project that seeks to convert HEIC to JPG files and MOV files to AVCHD format. The HEIC to JPG conversion works, but the MOV to AVCHD does not, which is where my problems lie. The intent is to do this with Spring Boot and FFmpeg, using a simple interface done in WindowBuilder. The relevant bits are the pom file: jmagick jmagick 6.6.9 net.java.dev.jna jna 5.7.0 net.java.dev.jna jna-platform 5.7.0  (...)
• 01:06
  Monitoring ffmpeg two-passes encoding - Hodol Newest 'ffmpeg' Questions - Stack Overflow
  I'm new in FFMPEG. According to the official guide, https://trac.ffmpeg.org/wiki/Encode/VP9 I use the following command to convert a large h.264 file: ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null /dev/null ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 2 -c:a libopus output.webm However, the pass-1 takes too long time and it does not log progress. With -report option I can see something is in progress but I don't know how long I should wait. Here's questions: Is there any way to see the progress of (...) -- https://trac.ffmpeg.org/wiki/Encode/VP9

30 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:01
  DirectX D3D11 Hardware Scaling Filter [closed] - Dash Santosh Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to implement a Hardware scaling filter (vf_scale_d3d11) using the VideoProcessBlt D3D11 DDI, and also add PIX_FMT_D3D11 support for the MediaFoundation Encoder (mfenc). Initially, there were a lot of "Static surface pool size exceeded". decode_receive_frame_internal failed = Invalid data found when processing input Static surface pool size exceeded get_buffer() failed thread_get_buffer() failed decode_slice_headec error no frame! This got fixed by incrementing initial_pool_size by 3. Now the following two flows works as (...) -- HandBrake, https://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20241230/ce28c8db/attachment.obj
• 15:55
  H264 - how to interpret encoded video data [closed] - Ragdoll Car Newest 'ffmpeg' Questions - Stack Overflow
  I would like to know how to interpret encoded video data by H.264 codec e.g. FFmpeg's AVPacket.data. Are there any good resources about that to study? I've been looking for the Internet, but I didn't find any documentation about H.264 format.
• 10:05
  FFMPEG 'Fontconfig error: Cannot load default config file' error Windows - Merel Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make a short video in FFMPEG, where a word stays on screen for the duration of the video (0.5s). My FFMPEG code looks like this: ffmpeg -f lavfi -i color=c=white:s=320x240:d=0.5 -vf "drawtext=fontfile= ‘c\\:\\Windows\\fonts\\calibri.ttf':fontsize=18: fontcolor=black:x=(w-text_w)/2:y=(h-text_h)/2:text='word'" output.mp4 However, I keep getting the following error (see below for full output): Fontconfig error: Cannot load default config file [Parsed_drawtext_0 ⓐ 000001c2918cef00] Using "C:/Windows/fonts/mingliub.ttc"  (...)
• 00:44
  Subprocess overhead vs library function? - Liran Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing an application, and I want to perform hardware encoding (av1. My hardware is capable of that) of frames. I seem to have two options - either call ffmpeg as a child process, or dynamically link ffmpeg/gstreamer and call the library functions directly. The child process option will be significantly easier. In my mind, spawning ffmpeg as a child process carries much more overhead compared to calling the library functions. Am I correct? If so, is the overhead just in RAM, or will it also affect performance? (It's for livestreaming so the encoding is (...)

29 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:35
  How do I get video frame buffer stream from a connected GoPro camera? - cleanrun Newest 'ffmpeg' Questions - Stack Overflow
  I'm creating an app that can connect to a GoPro camera and I want to get the frame buffer stream from the connected GoPro camera and use it on my iOS app (by converting the buffer data into CMSampleBuffer). I'm currently trying to use the FFmpeg library but so far it doesn't work. Here's the logic I've implemented (I'm using ChatGPT to generate the code): import Foundation import CoreMedia import AVFoundation import ffmpegkit final class FFmpegBufferProcessor: AnyBufferProcessor weak var delegate: (...) --
• 02:03
  Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. - Marc Archenault Newest 'ffmpeg' Questions - Stack Overflow
  I am receiving this warning from ffmpeg. The job runs and all the videos seem to output correctly. I have 2 hls, 1 mp4 with overlay + A single thumbnail. The warning: Stream #1:0: Video: png, rgba(pc), 500x38, 25 tbr, 25 tbn, 25 tbc Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of s ome encoder which was not actually used for any stream. The windows (...)

28 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:52
  Error in Splitting Educational Videos into Segments Using Python (ffmpeg issue) [closed] - Yahia Mohamed Hanbal Newest 'ffmpeg' Questions - Stack Overflow
  I created a Python project to split long educational videos into smaller segments, each focused on a single question. The program uses OCR to detect text on video frames, identifies the word "Question," extracts the number following it, and splits the video whenever the number increases. here is the video i am tring to split ((video)) Here’s an example of the program’s output: Video loaded: 14071 frames at 60 FPS, duration: 234.52s Frame 480, Time 8.00s, Question: 6 ... Frame 12360, Time 206.00s, Question: 7 Creating segment 1: 8.00s to 206.00s Error: (...) -- video, Automated Video Scene Cutting
• 22:05
  Add SRT subtitle to video with ffmpeg [closed] - jAckOdE Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to encode, and add subtitle to a video by following command $ ffmpeg -i hifi.avi -i hifi.srt -acodec libfaac -ar 48000 -ab 128k -ac 2 -vcodec libx264 -vpre ipod640 -s 480x240 -b 256k -scodec copy hifi.m4v -newsubtitle Here is the output ffmpeg version 0.8.git, Copyright (c) 2000-2011 the FFmpeg developers built on Aug 4 2011 11:11:39 with gcc 4.5.2 configuration: --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib --disable-shared --enable-static --enable-gpl --enable-postproc --enable-pthreads --enable-ffplay --disable-ffserver (...)
• 15:12
  How to transmit videos directly from the website to RTMP server instead of using OBS? [closed] - Cường Lê Sỹ Newest 'ffmpeg' Questions - Stack Overflow
  I had a server to receive a specific RTMP video like RTMP: //domain.com/show and use OBS to record videos, what I have to do to be able to record videos on my own website and transmit it. . Access RTMP server instead of using OBS or any code can do that, thank you I hope to be able to record videos directly on my website and play it back at the viewer page, like a livestream.
• 07:54
  How to use AMD hardware acceleration VAAPI when using ffmpeg in qtcreator? [closed] - Ling Yun Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg version:4.2.2 env:QT creator I passed this command in terminal: ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf format=yuv420p,hwupload -c:v h264_vaapi -b:v 1000k output.mp4 This can be accelerated, the CPU usage is very low But when I want to use code to implement hardware accelerated encoding, it prompts: cannot allocate memory(-12) my c++ code: av_hwdevice_ctx_create = (&hw_device_ctx,AV_HWDEVICE_TYPE_VAAPI,"/dev/dri/renderD128"); print:-12 I can be sure that I compiled ffmpeg (...)
• 03:06
  What does the left_block_options array represent in the fill_decode_neighbors function of FFmpeg？ - mike xu Newest 'ffmpeg' Questions - Stack Overflow
  I am studying the source code of FFmpeg, specifically the fill_decode_neighbors function. I am trying to understand how the decoding process works, especially the usage of the left_block_options array. Here is the relevant code snippet: static const uint8_t left_block_options[4][32] = 0, 1, 2, 3, 7, 10, 8, 11, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 5 * 4, 1 + 9 * 4 , 2, 2, 3, 3, 8, 11, 8, 11, 3 + 2 * 4, 3 + 2 * 4, 3 + 3 * 4, 3 + 3 * 4, 1 + 5 * 4, 1 + 9 * 4, 1 + 5 (...)

27 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:56
  Why is my .mp4 file created using cv2.VideoWriter not syncing up with the audio when i combine the video and audio using ffmpeg [closed] - joeS125 Newest 'ffmpeg' Questions - Stack Overflow
  The aim of the script is to take text from a text file and put it onto a stock video with an ai reading the text. Similar to those reddit stories on social media with parkour minecraft in the background. import cv2 import time from ffpyplayer.player import MediaPlayer from Transcription import newTranscribeAudio from pydub import AudioSegment #get a gpt text generation to create a story based on a prompt, for example sci-fi story and spread it over 3-4 parts #get stock footage, like minecraft parkour etc #write text of script on the footage #create (...)
• 20:13
  Playing RTP stream on Android 4.1.2 (Jelly Bean) [closed] - Homie_Tomie Newest 'ffmpeg' Questions - Stack Overflow
  I'll try to keep it quick. Using FFMPEG I started a stream on my PC. Here is the code: import subprocess def start_stream(): command = [ 'ffmpeg', '-f', 'gdigrab', # Desktop capture (Windows) '-framerate', '15', # Low framerate for higher performance '-i', 'desktop', # Capture desktop '-c:v', 'libx264', # Video codec (H.264) '-preset', 'ultrafast', # Ultra-fast encoding preset for minimal latency '-tune', (...)
• 20:13
  Overlay multiple images on one base image using FFMPEG - Caleb Newest 'ffmpeg' Questions - Stack Overflow
  I have command to overlay 2 images , and its working fine, "-y -i \\(image1) -i \\(image2) -filter_complex [0][1]overlay=(W-w)/2:(H-h)/2 \\(out)" I wish to add multiple images for example: we have four images [image1,image2, image3, image4]. Now image1 will be base one, I want to other 3 images on image1 as overlay. The images place can be vary randomly. I have been trying to search this on google, everything redirects to multiple images on video or combine video. Can anybody help (...)
• 01:46
  Why doesn't seem to be able to send an audio file with FRONT_COVER on the Pytelegrambotapi - exorik Newest 'ffmpeg' Questions - Stack Overflow
  In general the problem is that the audio file is sent to a file without a picture. I first thought that the problem is that the picture is installed on the wrong version of id3, and tried four methods of installation via the ffmpeg command = [ “ffmpeg”, “-i”, file_path, “-i”, cover_path, “-map”, “0”, “-map”, “1”, “-c:a”, “copy”, “-c:v”, “mjpeg”, “-id3v2_version”, “3“,”-y”, output_file, ]subprocess.run(command, check=True) via eyed3, audiofile.tag.images.set( eyed3.id3.frames.ImageFrame.FRONT_COVER, cover_data, “` image/jpeg, ) through the mutagen library, tried setting (...) -- audiofile w/ out cover, and the exact same audio file, only with the cover art. (it hasn't been altered in any way)
• 01:59
  [ffmpeg]How to use libfdk_aac to encode pcm to constant bitrate - qyt Newest 'ffmpeg' Questions - Stack Overflow
  I have tried both libfdk_aac and aac, but the encoded PCM audio always has a variable bit rate. Why is this happening? How can I make it encode with a constant bit rate The code is as follows: #include #include #include extern "C" #include #include #include #include #include #include #include #include #include #include #include #include int main(int argc, char** argv) AVCodecContext* codec_context = NULL; const AVCodec* codec = NULL; AVFrame* frame = NULL; AVPacket* (...)

26 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:40
  ffmpeg and .srt file with delayed subtitles [closed] - rgr Newest 'ffmpeg' Questions - Stack Overflow
  I have an .avi file from a miniDV camera and an .srt file with subtitles extracted from it. I run the avi file through Avisynth. The .srt file starts at 37m48s: 1 00:37:47,840 --> 00:37:48,400 08/13/2011 15:45:36 2 00:37:48,400 --> 00:37:49,400 08/13/2011 15:45:37 I convert it like this: ffmpeg.exe -avisynth_flags +all -i "input.avs" -i "input.srt" -map 0:v -map 0:a? -map 1:s? -c:v libx264 -crf 17 -c:a aac -b:a 192k -c:s mov_text -metadata:s:s:0 title="Timecode" -disposition:s:0 0 "output.mp4" But in the resulting file (...)

25 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:04
  Converting DAV to MP4 and OGG - mackowiakp Newest 'ffmpeg' Questions - Stack Overflow
  I want to prepare WEB page containing films from security camera recorders. Each recorder transmit video files in DAV format so each film is converted to MP4 format by script, using such syntax: ffmpeg -y -i movie.dav -vcodec libx264 -crf 24 movie.mp4 So I included in HTMLv5 code such entry: It works correctly with Chrome but not with Firefox. For proper work in FF it is necessary add link to OGG file. So correct HTMLv5 syntax for both browsers should look like this: Can anybody help (...)
• 12:05
  License / patent consideration of ffmpeg in mobile app (react native ffmpeg kit) [closed] - The MW Newest 'ffmpeg' Questions - Stack Overflow
  So I am using the react native ffmpeg kit in my mobile app, it is a closed source, commercial app. I am using the following functions/modules in the app: Trim video ffprobe to get frame count. add overlay png to video use minterpolate use libx264 and I am using the default package (per the document page, it has https enable by default) So I am wondering is this allowed in terms of software license and patent? If not, what can I do in order to meet these license and patent requirements?  (...)
• 09:08
  copy streams equivalent for yt-dlp (python) - GDjkhp Newest 'ffmpeg' Questions - Stack Overflow
  I need the -c:v copy -c:a copy counterpart of ffmpeg postprocessing for yt-dlp in python. The following code is how I convert videos which is really slow. # imagine options -> dict options.update( 'postprocessors': [ 'key': 'FFmpegVideoConvertor', 'preferedformat': arg, # can be mp4, webm, etc. ] )
• 04:25
  some codecs (ie. libx264) cannot be reused after draining - Neddie Newest 'ffmpeg' Questions - Stack Overflow
  After draining an encoder (by sending it a null frame and then receiving packets until EOF) it enters draining mode after which avcodec_send_frame will fail, returning EOF. You're supposed to call avcodec_flush_buffers which among other things sets the internal draining flag to 0, allowing avcodec_send_frame to work again. Unfortunately it checks AV_CODEC_CAP_ENCODER_FLUSH first and if not set it returns without resetting the draining flag. So the only way to reuse the codec is to close and reopen it, which is wasteful, plus avcodec_close is deprecated. Am I missing (...)

24 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:50
  Simple batch script for merging video and audio with ffmpeg using two wildcards - nanpa janaiyo Newest 'ffmpeg' Questions - Stack Overflow
  as the title says, im trying to mass-merge videos and audios with the same name together in ffmpeg I tried for %%A in (*.adx) do ( for %%B in (*.m2v) do ( ffmpeg -i %%A -i %%B %%B.mp4 ) ) but while it does change the video it works on, the audio remains the same. For example, if i have A, B and C in .adx, and A, B and C in .m2v, the result will be that all 3 videos (A, B and C) use the audio A.
• 18:56
  How to use FFmpeg with Java? - Shyam Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the following command to convert sequence of images to a video: ffmpeg -r 1 -i sample%d.png -s 320x240 -aspect 4:3 output.flv This works fine for me! Now I'm trying to use the above command to run through Java code. How can I run the FFmpeg command using Runtime.getRuntime() from my Java code?
• 14:59
  How to pass an in-memory-file address to another function in .NET - aminrd Newest 'ffmpeg' Questions - Stack Overflow
  I have an in-memory file called byte[] FileContent and a third-party package ( FFMPEG in my case) that converts the given input file and saves it into the output directory: FFMPEGCore.Join("/path/to/output.mp4", "path/to/input.mp4"); Unfortunately, at the API level, I cannot writes by byte [] into a file, so I was wondering if there's a way to keep everything in-memory and pass the address of my in-memory input, output to FFMPEGCore.Join?
• 10:21
  FFMPEG, How to stream video and audio into one file with volume adjustment and video cropping [closed] - Unlock iPhone Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg -i "1.mp4" -i "Knockout.mp3" -filter_complex "[0:a]volume=0.1,atempo=1.1[a];[1:a]volume=1[b];[a][b]amix=inputs=2[audio]" -filter_complex "setpts=PTS/1.1,crop='min(iw\\,ih1/1)':'min(ih\\,iw1/1)" -c:v libx264 -preset ultrafast -tune fastdecode -crf 20 -c:a aac -b:a 128k -r 30 -strict experimental -shortest "Output_00001.mp4" ffmpeg -i "1.mp4" -i "Knockout.mp3" -filter_complex "[0:a]volume=0.1,atempo=1.1[a];[1:a]volume=1[b];[a][b]amix=inputs=2[audio]" -filter_complex "setpts=PTS/1.1,crop='min(iw\\,ih1/1)':'min(ih\\,iw1/1)" -c:v libx264 -preset ultrafast (...)
• 11:21
  ffmpeg crash when updating overlay file (c# console app) - Vlad Stefan Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to develop a console app that can record the screen and have cpu/ram/gpu usage of the machine noted on the recording. The problem i am facing is that after a while (2-3 hours) the recording stops because ffmpeg is trying to read the file text while my C# code tries to update the file. I managed to find out that I should use a temp file and replace the original instead of rewriting the whole file but that way I encounter another problem, ffmpeg will try to read the file while the file is replaced or even for that split second when is considered deleted. Any ideas what I should (...)

23 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:46
  Increased File Size When Converting MP4 to WebM using FFmpeg - kimgijeong Newest 'ffmpeg' Questions - Stack Overflow
  I am using FFmpeg to convert MP4 to WebM with the following command: ffmpeg -y -hide_banner -nostats \\ -f mov,mp4,m4a,3gp,3g2,mj2 -i "http://127.0.0.1:80/lotteon-low-bitrate.mp4" \\ -threads auto -f webm -acodec libopus -b:a 96.059k -vcodec libsvtav1 -preset 11 -pix_fmt yuv420p \\ -vf "scale='min(-1, iw)':'min(-1,ih)':force_original_aspect_ratio=decrease,crop=trunc(iw/2)*2:trunc(ih/2)*2" \\ "/usr/local/m2/m2temp/xcdrtmp/2052_1.webm" However, the output webm file size is larger than the source MP4 file. For example: Source MP4: 4.6 (...)
• 07:03
  How to Terminate a Process Normally Created using ProcessBuilder - Bilal Ahmed Yaseen Newest 'ffmpeg' Questions - Stack Overflow
  I am creating Processes using ProcessBuilder in my Java Application. The created process executes some FFMPEG commands which actually copy the RTSP streams in specified destination media file. ProcessBuilder builder = new ProcessBuilder("ffmpeg", "-i", RTSP_URL, "-f", fileFormat, destFilePath); Process processToExecute = builder.start(); I want to close the process before it completes its execution. So, If I run this FFMPEG command directly in windows CMD and then press 'CTRL+C' after 5 seconds then process get terminates with status '2'. And I (...)
• 05:14
  ffmpeg change order of mkv streams and add additional encoding for one audio stream - SU3 Newest 'ffmpeg' Questions - Stack Overflow
  Let's say I have an mkv file with 1 video and 4 audio streams. One of the audio streams is encoded with dts codec. I want to add another version of this stream encoded in aac. I also want to keep all of the existing streams, and rearrange them in a different order in the output file. Here's what is in the input file: $ ffmpeg -i input.mkv . . . Stream #0:0(eng): Video: h264 (High), yuv420p(tv, bt709/unknown/unknown, progressive), 1920x800 [SAR 1:1 DAR 12:5], 23.98 fps, 23.98 tbr, 1k tbn (default) Stream #0:1(rus): Audio: dts (dca) (DTS-ES), 48000 Hz, (...) -- here
• 02:51
  FFmpeg to connect to RTSP in Python, but sometimes the video stream freezes, and FFmpeg throws an error - Jin Hc Newest 'ffmpeg' Questions - Stack Overflow
  Here is part of my code. I use the ffmpeg-python library in Python to receive the RTSP stream and perform subsequent processing. def __init__(self, parent: QWidget = None): super(captureVideo_Thread, self).__init__() self.ffmpeg_args = "rtsp_transport": "tcp", "fflags": "+genpts+discardcorrupt+autobsf+fastseek", "flags": "low_delay", "err_detect": "ignore_err", "reorder_queue_size": 10000, "vsync": 2, "probesize": 10 * 1000000, "analyzeduration": 10 * 1000000, "threads": "auto",  (...)
• 01:16
  how to install ffmpeg-2.8.22 in RHEL 9.5 - Shuang Fan Newest 'ffmpeg' Questions - Stack Overflow
  I want to install ffmpeg version 2.8.22 in my RHEL 9.5,i installed gcc 11.5.0, nasm 2.15.05 and yasm 1.3.0.87.g121a,but after i make ;make install ,it shows make: *** No rule to make target 'x86util.asm', needed by 'libavutil/x86/cpuid.o'. Stop. I downloaded source code from https://codeload.github.com/FFmpeg/FFmpeg/tar.gz/refs/tags/n2.8.22 save in ffmpeg-2.8.22.tar.gz use tar -zxvf ffmpeg-2.8.22.tar.gz get FFmpeg-2.8.22 folder change folder cd FFmpeg-2.8.22 configured with ./configure --enable-shared (...)

22 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:38
  Python aiortc: How to record audio and video come from client in the same file? [closed] - Chris P Newest 'ffmpeg' Questions - Stack Overflow
  I have an aiortc app, which html5 client send data (microphone,camera) into server. In server side i sucessfully played this two streams seperatly. But when i try to record using aiortc MediaRecorder helper class, only the voice is recording, and the video is dropped (mp4 format). I think this is due sync issue. The audio_frame and the video_frame (each pair of them) have different time_base. (I don't know if this is strange). But it also has different time. I can share code, but couldn't help at all right now. Edit: I also tried to (...)
• 16:46
  ffmpeg smooth scroll in smooth loop [closed] - Igor Scherbickij Newest 'ffmpeg' Questions - Stack Overflow
  I need help creating code for ffmpeg. I have a picture with dimensions x000*1080 (the length will be more than 1920, but it depends on the picture). I want to scroll it endlessly and seamlessly (the picture repeats) i write this code, who work but have freezes ffmpeg -loop 1 -i sr_innernet.png -vf "scroll=horizontal=0.0004,crop=1920:1080:0:0,format=yuv420p" -r 120 -t 10 output.mp4 After this i googled other method, who can make it smoothly. but this method no works with looping(image scrolled once) ffmpeg -r 1 -loop 1 -t 61 -i sr_innernet.png -filter_complex (...)
• 12:10
  Overlay video onto another video at multiple points in time - kbcool Newest 'ffmpeg' Questions - Stack Overflow
  I have a case where I want to have a background video and use a second video overlaying the first but at multiple points in time. The second video is shorter. So for example the main video is a minute long and the second video is 10 seconds. I want to overlay the second video once at 15seconds then again at 35 seconds and then again at 55 seconds (terminating when the main video does). I am able to get the second video to overlay successfully using overlay filter and between option but it only ever works for the first overlay. The second overlay seems to show the last (...)
• 04:08
  Real time playback of two blended videos with alpha channel and synched audio in pygame? - Francesco Calderone Newest 'ffmpeg' Questions - Stack Overflow
  I need to play two videos with synched sound in real-time with Pygame. Pygame does not currently support video streams, so I am using a ffmpeg subprocess. The first video is a prores422_hq. This is a background video with no alpha channel. The second video is a prores4444 overlay video with an alpha channel, and it needs to be played in real-tim on top of the first video (with transparency). All of this needs synched sound from the first base video only. I have tried many libraries, including pymovie pyav and opencv. The best result so far is to use a subprocess with (...)
• 04:14
  Encapsulation of raw opus frames to ogg using ffmpeg.autogen - Miloš Šula Newest 'ffmpeg' Questions - Stack Overflow
  I need to encapsulate raw opus frames ( from rtpdump similar format ), but i have trouble with function ffmpeg.avformat_write_header - Error writing opus headers -1094995529 public unsafe class OpusMuxer public static void ConvertRawOpusToOggOpus(string inputPath, string outputPath, int sampleRate = 48000, int channels = 2) ffmpeg.av_log_set_level(ffmpeg.AV_LOG_INFO); AVOutputFormat* fmt = ffmpeg.av_guess_format("ogg", null, null); if (fmt == null) Console.WriteLine("Nepodařilo se zjistit výstupní formát (ogg).");  (...)
• 01:13
  Read multiple frames in demuxer - Aycon Newest 'ffmpeg' Questions - Stack Overflow
  I use FFmpeg.AutoGen. This is C# wrapper of ffmpeg (7.0) C++ library for reading mediafiles and generate stream of frames for other application. I want get n frames and hold pointers in memory indefinitely. However, I am completely confused trying to figure out which API is deprecated and how I can tell ffmpeg to hold the pointers in memory until I tell it to. I don't want to copy the frame after receiving it if I can avoid it. I tried many ways. My last attempt was to receive the frames using ffmpeg.avcodec_send_packet(), ffmpeg.av_read_frame() and (...) -- manual

21 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:12
  Detect if an interlaced video frame is the Top or Bottom field? - Danny Newest 'ffmpeg' Questions - Stack Overflow
  I'm decoding video PES packets (packetized elementary stream) containing H.264/AVC and H.265/HEVC using libavcodec like this: while (remainingESBytes > 0) int bytesUsed = av_parser_parse2( mpParser, mpDecContext, &mpEncPacket->data, &mpEncPacket->size, pIn, remainingESBytes, AV_NOPTS_VALUE, AV_NOPTS_VALUE, 0); // send encoded packet for decoding int ret = avcodec_send_packet(mpDecContext, mpEncPacket); if (ret < 0) // failed continue; while (ret >= 0) ret = (...)
• 14:35
  My discord music bot is not playing the entire music - james12 Newest 'ffmpeg' Questions - Stack Overflow
  My discord music bot based on discord.py, yt_dlp and ffmpeg is not working. I downloaded every module that is required and added environmental variables. But, my discord bot is not working properly. The bot plays the music properly at first, but the music ends before the song finishes. Full code below: import discord from discord.ext import commands import yt_dlp app = commands.Bot(command_prefix='!', intents=discord.Intents.all()) ydl_opts = 'format': 'bestaudio/best', 'extractaudio': True,  (...)
• 01:21
  How to render a blend of two videos with alpha channel in python in real time? [closed] - Francesco Calderone Newest 'ffmpeg' Questions - Stack Overflow
  I need to play two videos in real time in Python. One video is a background video with no alpha channel. I am using H264 but it can be any codec. The second video is an overlay video. This video with an alpha channel needs to be played in real-time on top of the first video. I am using Quicktime 444 with an alpha channel but again, it can be any codec. In terms of libraries, I tried a combination of cv and numpy, I tried pymovie, pyAV, ffmpeg... so far, all the results have been unsuccessful. When the videos render, the frame rate drops way below 30FPS, and the resulting (...)
• 10:41
  How to render two videos with alpha channel in real time in pygame with synched audio? - Francesco Calderone Newest 'ffmpeg' Questions - Stack Overflow
  I need to play two videos with synched sound in real-time with Pygame. Pygame does not currently support video streams, so I am using a ffmpeg subprocess. The first video is a prores422_hq. This is a background video with no alpha channel. The second video is a prores4444 overlay video with an alpha channel, and it needs to be played in real-tim on top of the first video (with transparency). All of this needs synched sound from the first base video only. I have tried many libraries, including pymovie pyav and opencv. The best result so far is to use a subprocess with (...)
• 09:51
  How to render two videos with alpha channel in real time in pygame? - Francesco Calderone Newest 'ffmpeg' Questions - Stack Overflow
  I need to play two videos with synched sound in real-time with Pygame. Pygame does not currently support video streams, so I am using a ffmpeg subprocess. The first video is a prores422_hq. This is a background video with no alpha channel. The second video is a prores4444 overlay video with an alpha channel, and it needs to be played in real-tim on top of the first video (with transparency). All of this needs synched sound from the first base video only. I have tried many libraries, including pymovie pyav and opencv. The best result so far is to use a subprocess with (...)
• 05:49
  How to improve the fluency of rtsp streaming through ffmpeg (processing 16 pictures at the same time) - Ling Yun Newest 'ffmpeg' Questions - Stack Overflow
  When the button is clicked, I create 16 threads in Qt, and then pass the rtsp data address and the label to be rendered to the process, and then the process does this: run: void rtspthread::run() while(!shouldStop) openRtspStream(rtspUrl.toUtf8().constData(),index); qDebug() << "RTSP stream stopped."; emit finished(); open input stream: void rtspthread::openRtspStream(const char* rtspUrl,int index) AVDictionary *options = nullptr; AVFrame *pFrameRGB = nullptr; uint8_t (...)

20 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:13
  How to check if OpenCV VideoCapture uses multithreading or multiprocessing internally when connecting to a camera [closed] - Chen Newest 'ffmpeg' Questions - Stack Overflow
  I'm using OpenCV's cv::VideoCapture in C++ (or Python) to connect to a camera stream. I would like to know if OpenCV internally uses multithreading or multiprocessing when opening and capturing frames from the camera. Specifically, I'm curious about: Whether OpenCV spawns new threads or processes when using cv::VideoCapture. If FFmpeg is enabled as the backend, does it use multithreading or multiprocessing under the hood? How can I verify the threading or process behavior during camera streaming? What I Tried: I checked the (...)
• 16:50
  Cannot display a decoded video frame on Raylib - gabriel_tiso Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to explore libav and raylib just to understand how audio and video work, and also to learn how to build nice interfaces using the raylib project. I've implemented a simple struct capable of decoding audio and video frames. When a video frame appears, I convert it to the RGBA format, which packs the values into 32bpp. This is the setup: if (av_image_alloc((uint8_t **)media->dst_frame->data, media->dst_frame->linesize, media->ctxs[0]->width, media->ctxs[0]->height, AV_PIX_FMT_RGBA, 1) < 0) fprintf(stderr, "Failed to setup dest image\\n");  (...) --
• 11:02
  FFMPEG spoils the extreme pixels when converting and cropping images [closed] - Jacob Newest 'ffmpeg' Questions - Stack Overflow
  I have a side image processing task in my work. I am using the following command to translate a spherical panorama into a cubemap: Path/ffmpeg.exe -i "Path/PanoImageInput.png" -vf v360=equirect:c6x1:fin_pad=64:out_frot=002200,scale=-1:2048:flags=neighbor "Path/CubemapOutput.png" And then I slice it into separate images, 1 face for example: Path/ffmpeg.exe -i "Path/CubemapOutput.png" -vf crop=2048:2048:0:0 -sws_flags neighbor "Path/face_1.png" I get artifacts on both cubemap and images of this kind that really bother me: Cubemap image junction The junction (...) -- Cubemap image junction, The junction and part of the edge of the cubemap image
• 10:23
  LibAV: converting PTS to frame number - Michael IV Newest 'ffmpeg' Questions - Stack Overflow
  I am developing an mp4 demuxer with LibAV. I need a helper function which converts PTS to frame numbers. I came up with the following code which works. But I am not sure how correct it is in the LibAV realm for any video input. In my case video fps = 25, timescale = 25000. Each next PTS is incremented by 40,giving me correct frameNumber. static double get_frame_rate(AVStream* stream) if (stream->r_frame_rate.num > 0 && stream->r_frame_rate.den > 0) return av_q2d(stream->r_frame_rate); else if (stream->avg_frame_rate.num > 0 && (...)
• 08:05
  How to stop ffmpeg remotely? - Adam Newest 'ffmpeg' Questions - Stack Overflow
  I'm running ffmpeg on another machine for screen capture. I'd like to be able to stop it recording remotely. FFMPEG requires that q is pressed to stop encoding as it has to do some finalization to finish the file cleanly. I know I could kill it with kill/killall however this can lead to corrupt videos. Press [q] to stop encoding I can't find anything on google specifically for this, but some there is suggestion that echoing into /proc//fd/0 will work. I've tried this but it does not stop ffmpeg. The q is however shown in the terminal (...)
• 07:57
  How to adjust audio volume with AVFilter API from FFmpeg in Linux? - wangt13 Newest 'ffmpeg' Questions - Stack Overflow
  I am working on an embedded Linux system (kernel-5.10.24), and developing an audio player by using FFmpeg and ALSA libraries. Now the basic functions are done, and I can play MP3 file by using AVCodec and SWresample interfaces of FFmpeg. int decode_play(void) ..... while (1) if (av_read_frame(pfmtctx, packet) < 0) avcodec_flush_buffers(pcodectx); printf("Got end of media, breaking\\n"); break; if (packet->stream_index != stream) continue; int res = avcodec_send_packet(pcodectx, packet); if (res < 0)  (...)
• 01:18
  ffmpeg underutilizes cpu on AWS EC2 instance [closed] - Denis Newest 'ffmpeg' Questions - Stack Overflow
  i'm running video encoding with ffmpeg on EC2 instance (c5.xlarge - 4 vcpus) ffmpeg \\ -i "$INPUT_URL" \\ -c:v libvpx-vp9 -b:v 1M -threads 4 \\ -tile-columns 1 -frame-parallel 1 \\ -row-mt 1 \\ -cpu-used 0 \\ -quality 1 \\ -speed 3 \\ -r 6 \\ -f segment -segment_time "$SEGMENT_DURATION" -reset_timestamps 1 \\ "$OUTPUT_DIR/$OUTPUT_FILE_PREFIX$(date +%s)%03d.webm" > ffmpeg.log 2>&1 & I expected the CPU utilization to be around 390%, but I observed it to be around 170% via top why and what i'm doing (...)
• 00:16
  iOS Radio App: Need to extract and stream audio-only from HLS streams with video content - Bader Alghamdi Newest 'ffmpeg' Questions - Stack Overflow
  I'm developing an iOS radio app that plays various HLS streams. The challenge is that some stations broadcast HLS streams containing both audio and video (example: https://svs.itworkscdn.net/smcwatarlive/smcwatar/chunks.m3u8), but I want to: Extract and play only the audio track Support AirPlay for audio-only streaming Minimize data usage by not downloading video content Technical Details: iOS 17+ Swift 6 Using AVFoundation for playback Current implementation uses AVPlayer with AVPlayerItem Current Code Structure: class StreamPlayer: (...) -- https://svs.itworkscdn.net/smcwatarlive/smcwatar/chunks.m3u8, https://mbcfm-radio.mbc.net/mbcfm-radio.m3u8

19 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:26
  Accurately calculate concatenated audio file size without actually concatenating for rss enclosure length - askrill Newest 'ffmpeg' Questions - Stack Overflow
  A little background. Im working on implementing DAI into a podcast hosting and the solution I’m working with is splitting the audio file for mid role ads and then just concatenating the files with the ad in middle. All files will be the same encoding, bitrate… what I need to figure out is what to put as the length of the encloser in the rss feed. In addition if the ad is gonna change per request then there’s no way to keep that encloser length accurate unless all the ads are the same (...)
• 20:55
  FFmpeg MOV to MP4, do I also need .OGG , .WEBM files too? - Chris Newest 'ffmpeg' Questions - Stack Overflow
  I am new to FFmpeg and I'm just getting started. I have the two following commands to take a .mov upload and downsize it and save it out as an .mp4. I also produce a thumbnail version of the same. What I am doing here seems to work well and I manage to get the .mov file from 12.5mb to about a 1mb .mp4. My question from here is, can I get away with only providing a .mp4 for the source video, or do I need to provide additional .ogg and/or .webm files too? An if so, how is that best achieved? Would I have to loop that FFmpeg command again to output new .ogg and .webm (...)
• 09:28
  FFmpeg `FileNotFoundError` ([WinError 2]) when probing a video file in Python - Mannu Newest 'ffmpeg' Questions - Stack Overflow
  I'm encountering a FileNotFoundError with the message [WinError 2] The system cannot find the file specified when trying to probe a video file using the Python ffmpeg-python library. This occurs despite the file existing, being readable, and having the correct path. I have verified file existence and permissions in my script. Here's the relevant output and my Python code: Output: Checking sample folder contents... Script location: C:\\Users\\me\\A\\B\\ProjFile\\vid_pro_tool\\src\\video_processing\\video_compressor.py Project root: (...)

18 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:36
  sws_scale YUV --> RGB distorted image [closed] - Sami susu Newest 'ffmpeg' Questions - Stack Overflow
  I want to convert YUV420P image (received from H.264 stream) to RGB, while also resizing it, using sws_scale. The size of the original image is 480 × 800. Just converting with same dimensions works fine. But when I try to change the dimensions, I get a distorted image, with the following pattern: changing to 481 × 800 will yield a distorted B&W image which looks like it's cut in the middle 482 × 800 will be even more distorted 483 × 800 is distorted but in color 484 × 800 is ok (scaled correctly). Now (...)
• 20:12
  I need assistance of making a automated script for ffmpeg [closed] - user2614404 Newest 'ffmpeg' Questions - Stack Overflow
  Currently i use this script that GPT generated: ffmpeg -c:v av1_qsv -b:v 0 -global_quality 20 -preset veryslow -look_ahead 64 -c:a copy -c:s copy G:\\1ARC-movies\\A-View-to-a-kill.mkv -i Y:\\media\\Movies\\A_VIEW_TO_A_KILL_t05.mkv But sadly GPT being gpt, it hallucinates answers, and none of it's deeper automation code scripts were working when it made the scripts for a .ps1 script file. And as i find most of the docs quite overwhelming, i need help to simplify what i need. As i learn best when i get explained what i currently try to do, and not every variable ffmpeg can (...)
• 14:16
  How can I render a video in real time with custom parameters? - Joaquín L. Robles Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to render a video in real time with custom parameters? I'm trying to inject some parameters (text, image and other video portions) into a video template depending on user parameters, like the "Facebook 10 Years video".. The output format should be any video format such as H.264. I've been googling and asking and the closest I got is to make a video from HTML5 canvas captures, which I think is totally inefficient. Any insight or guidance would be great, (...) -- make a video from HTML5 canvas captures
• 11:47
  python - record and preview webcam at the same time, using e.g. ffmpeg - Jan Oechsler Newest 'ffmpeg' Questions - Stack Overflow
  I want to record webcam with sound using python. After tryng multiple different methods, ffmpeg with the python wrapper showed the best results. Recording works, but how can I preview the webcam at the same time, so I know where I am pointing the cam at? I've seen this post, but I dont understand how I could implement this in python, using the wrapper. Any ideas on how to do this? Or if there is another, easier, solution to record webcam video with sound and preview it simultaneously from within a python (Qt) application? This is my code so far: import (...)
• 10:16
  Create a bat file to exit FFMPEG (Windows) - user3812737 Newest 'ffmpeg' Questions - Stack Overflow
  Hello everyone I am using this bat file in order to capture my screen. ffmpeg -f dshow -i video=screen-capture-recorder -r 240001001 -q 1 lma_recording.avi When I press the q button the video capture stops. However I would like to stop the screen capturing with another bat file. I have tried this: taskkill /im ffmpeg.exe without luck Any suggestions?

17 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:37
  Recursively convert images in each subfolder into individual videos using FFmpeg - arutan edram Newest 'ffmpeg' Questions - Stack Overflow
  I am using this script to convert all images in a folder into a video. Each image is shown for 4 seconds and the script runs from a bat file. `ffmpeg -framerate 1/4 -i %%03d.jpg -pix_fmt yuv420p video.mp4` I have hundreds of subfolders each containing images with the same resolution and I want to convert them into one moive per subfolder. I might be close to a solution but it still does not do the job ⓐecho off setlocal enabledelayedexpansion :: Set the frame rate and file format set "framerate=1/4" set "image_format=%%03d.jpg" set (...)
• 22:00
  OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error - user2262504 Newest 'ffmpeg' Questions - Stack Overflow
  I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out. It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec 'libx264'" error. Anyone has ideas to solve this problem? More specifically: anyone knows where and how OpenCV invoke ffmpeg API? how to change ffmpeg default settings using code, hopefull, can be (...)
• 19:04
  Optimizing FFmpeg/x264 Configuration for Ultra-Low Latency UDP Streaming [closed] - pourjour Newest 'ffmpeg' Questions - Stack Overflow
  I'm implementing a real-time screen streaming application using FFmpeg's libraries (libavcodec, libavformat) with H.264 encoding and UDP transport. While I have basic low-latency settings in place, I'm looking to minimize latency as much as possible while maintaining reasonable quality. Here's my current encoder configuration: // Configure codec for low latency codecContext->width = WIDTH; codecContext->height = HEIGHT; codecContext->time_base = AVRational1, FPS; codecContext->framerate = AVRationalFPS, 1; codecContext->pix_fmt = (...)
• 15:23
  FFmpeg live editing - NikxDa Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a video editing tool in HTML/CSS and PHP. For the video editing, I am using ffmpeg. Now, the file upload and the general editing works pretty well, but I have a problem. I would like to preview the final result inside an HTML video-tag. Thus, wenn I upload 4 clips and then select seconds 5 to 10 to be cut out, I'd like to immediately view the result so I can decide whether I want to keep it or not. Does FFmpeg support something like this? If not, what would be the best solution? (...)

16 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:17
  How to Match ASS Subtitle Font Size with Flutter Text Size for a 1080p Video? - Mostafa Fathi Newest 'ffmpeg' Questions - Stack Overflow
  I’m working on a project where I need to synchronize the font size of ASS subtitles with the text size a user sees in a Flutter application. The goal is to ensure that the text size in a 1080p video matches what the user sees in the app. What I've Tried: Calculating font size using height ratio (PlayResY/DeviceHeight): I used the formula: FontSize_ASS = FontSize_Flutter * (PlayResY / DeviceHeight) While the result seemed logical, the final output in the video was smaller than expected. Adding a scaling (...)
• 10:48
  ffmpeg_kit_flutter_full : Video created from ffmpeg not showing in the web - Đoàn Thanh Thảo Newest 'ffmpeg' Questions - Stack Overflow
  I am implementing a screen capture widget to create a video. The video was successfully created in MP4 format and I can view it in my app and then I posted it to my web. However, on the web, I cannot see the video preview, only when I download the video and view it on my phone can I see it. I think the problem is that there is some missing format that makes the video not playable on Https. Here is my code: final command = '-y -f image2 -i $imagesPath ' '$fps != null ? "-r $fps" : "" ' '-vf "scale=2000:5000" ' // '-vf (...)
• 05:03
  ffmpeg hstack long list of files [closed] - Elle Fiorentino-Lange Newest 'ffmpeg' Questions - Stack Overflow
  I have 1920 images that are 1920x1080 in resolution. I've sliced each image into 1x1080 slices. They are in folders labeled img0001_slices, img0002_slices, ... img1920_slices. In the folders the slices are labeled img0001_slice_0, img0001_slice_1, ... img0001_slice_1919. I want to use ffmpeg to form new images out of the slices. New image one should be the first slice of all the original images lined up horizontally from img1920 on the left to img0001 on the right. New image two should be the second slice of the original images in the same order, new image three should be the third, (...)
• 04:28
  ffmpeg complex concat audio [closed] - s0mbre Newest 'ffmpeg' Questions - Stack Overflow
  I've got one video file (let's say "vid.mp4") and two audio files ("1.aac" and "2.aac") as inputs. I need to replace two parts in the original video's sound track with these two new audios, while retaining the original video track. The first cutout is at timecode from 0.44 to 1.85 sec. The second is from 15.6 sec to end of video. I'm doing it like this: ffmpeg -y -i vid.mp4 -i 1.aac -i 2.aac -filter_complex "[0:a]atrim=end=0.44[a1]; [0:a]atrim=start=1.85:end=15.6; [a1][1:a][a2][2:a]concat=n=4:v=0:a=1[a]" -map 0:v -map "[a]" -c:a aac out.mp4 But (...)
• 02:42
  ffmpeg concat and preserve metadata streams - Andrew Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to concat multiple files that are the result of a GoPro Hero6 splitting movies to avoid the FAT 4GB limit. ffmpeg works great for this purpose but I need the telemetry data that is encoded in the metadata streams, and ffmpeg by default doesn't seem to preserve this. Using the ffprobe command you can see that the source videos have: Stream #0:3(eng): Data: none (gpmd / 0x646D7067), 36 kb/s (default) Metadata: creation_time : 2018-07-15T16:16:26.000000Z handler_name : GoPro MET I know from research that this is the stream I need (...)

15 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:21
  how to change ffmpeg time format information? [closed] - Martin Martin Calden Calden Newest 'ffmpeg' Questions - Stack Overflow
  I am using the freezedetect filter and the time format keeps appearing as seconds. that is really bothering me because I need to calculate it to minutes for editing and it takes time. how can I change the default time format to hh:mm:ss ? this is the command I use to detect freezeframe: ffmpeg -i freeze.mp4 -vf "freezedetect=n=-60dB:d=1" -map 0:v:0 -f null - I am not really understand how to change it. and this is the result: [freezedetect ⓐ 0000025e6b92ee80] lavfi.freezedetect.freeze_start: 348.958008 [freezedetect ⓐ 0000025e6b92ee80] (...)
• 22:11
  hls.js unable to maintain seek with live video [only] stream - Rob Newest 'ffmpeg' Questions - Stack Overflow
  I am encoding a live 25 FPS 950x540 H.264 video-only stream using the latest (built from source) FFmpeg, 10 segments in the manifest, each of 5 seconds, and consuming that stream on another machine on my local LAN in [incognito to avoid cache issues] Chrome with the latest hls.js (cdn.jsdelivr.net/npm/hls.jsⓐlatest). The encoded video plays but not reliably; I have two problems: When the stream is running, the hls.js client starts to be unable to sync with the video stream after a few minutes, complaining of being beyond the end of the sync window and, on re-sync, getting empty (...) -- https://github.com/RobMeades/watchdog/blob/83e718390f779a7ef98d2be009784e8be5deaf5f/software/watchdog.cpp#L933
• 06:50
  FFmpegKit in Flutter fails with configuration output on Android - ashvin jadav Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg_kit_flutter in my Flutter app to add a text overlay to a video. However, when I try to execute the FFmpeg command, I get an output similar to this: configuration: --cross-prefix=aarch64-linux-android- --sysroot=/Users/sue/Library/Android/sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/darwin-x86_64/sysroot --prefix=/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/ffmpeg --pkg-config=/opt/homebrew/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --target-os=android --enable-neon --enable-asm --enable-inline-asm --ar=aarch64-linux-android-ar (...)

14 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:40
  How to download ffmpeg utilities into Python venv with pip or manual way for torchaudio - Furkan Gözükara Newest 'ffmpeg' Questions - Stack Overflow
  torchaudio requiring avutil and other binary dll files Source : https://pytorch.org/audio/2.3.0/installation.html However they given example only for Anaconda I am not using Anaconda but I am using Python 3.10.11 pip venv I can't find these DLL files anywhere How can I find and install them into Python venv? Since I can't find, I am getting below error Traceback (most recent call last): File "R:\\MMAudio_v1\\MMAudio\\venv\\lib\\site-packages\\gradio\\queueing.py", line 625, in process_events response = await route_utils.call_process_api(  (...) -- https://pytorch.org/audio/2.3.0/installation.html
• 15:08
  Getting time codes in video files easier - Arete Newest 'ffmpeg' Questions - Stack Overflow
  I am going through some videos to trim them (extracting parts of the video). I know there is billions of software out there that can trim videos easily, but I haven't found any that does not recode the result. My method right now is to open the video in MPC-BE -> play -> pause -> note down the time -> resume to find a place end the clip -> pause -> note down the end time for the clip. Then I take the time codes and use ffmpeg to extract the part. Usually with something like: ffmpeg -i input.mp4 -ss 01:50:00 -to 01:55:00 -c:v copy -c:a copy output.mp4 My (...) -- TMPGEnc MPEG Smart Renderer 6
• 22:41
  FFMPEG audio 0.1ms stutter but video is smooth [closed] - c0de b0unty Newest 'ffmpeg' Questions - Stack Overflow
  I have videos in a folder unprocessed and i'm also using inotifywait to check the folder for new sub folders for videos and process them automatically.... Problem i have is with ffmpeg and stuttering audio in segments while video is smooth. I notice it's just a small stutter like gibberish for 0.1ms in random segments but no desync. It's annoying to have this small stutter. Also source MP4 file has smooth audio and video. I have 100K+ Videos pending HLS processing and files have different dimensions i added the checks for it in the script but ffmpeg keeps (...)
• 19:21
  FFmpeg/Next.js15 How to serve converted MKV stream to MP4 stream - user28760545 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to serve a video stream using Next.js 15, and using FFmpeg to convert the video stream from MKV to MP4 so it can display on a majority of web browsers. I seem to be able to convert it successfully returning a 200 status code but nothing seems to pop up. Perhaps I am serving the converted chunks wrongly. /app/api/stream/route.ts import spawn from "child_process"; export async function GET(request) const mkvStream = getMKVStream(); const ffmpeg = spawn("ffmpeg", [ "-i", "pipe:0", "-f", "mp4", "-movflags", (...)
• 18:33
  Unexpectedly bad quality metrics of VVC encoded video [closed] - Wieprzek Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a project where I'm comparing a number of codecs via SSIM, PSNR and VMAF. Im getting really bad results for VVC (libvvenc) (0.23 ssim, 9.46 VMAF), even though the output doesn't look that bad. My scores for other codecs with default settings are around 0.88-0.96 SSIM and around 90 VMAF. As my input I use raw videos from xiph.org I first encode it: ffmpeg -i city_cif.y4m -c:v libvvenc city_cif_libvvenc.mp4 then I decode it back to raw, although I have to set output format to .yuv since y4m doesnt support the only pixel format libvvenc (...) -- xiph.org
• 02:20
  ffmpeg command to create thumbnail sprites - FI-Info Newest 'ffmpeg' Questions - Stack Overflow
  To output a single frame from ffmpeg I can do: ffmpeg -i input.flv -ss 00:00:14.435 -vframes 1 out.png And to output an image every second, I can do: ffmpeg -i input.flv -vf fps=1 out%d.png Would there be a way to create a thumbnail sprite from these outputs to help with the creation of a vtt file for thumbs on seek position?

13 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:23
  Why is MoviePy taking hours to generate a few minutes of video, and are there faster alternatives? [closed] - Michael Ohana Newest 'ffmpeg' Questions - Stack Overflow
  I’m working on a project that involves creating personalized courses and exploring automated video generation. Currently, I’m using MoviePy to generate videos, but I’m encountering significant performance issues—generating just a few minutes of video with basic text overlays and audio integration is taking hours. Are there ways to optimize MoviePy for faster performance? Are there better tools, frameworks, or APIs (e.g., FFmpeg or others) for similar tasks? Any guidance, recommendations, or examples of implementations would be greatly (...)
• 13:49
  How to Turn image A + audio + A into Video A with the exact same attributes of Video B so both can be concatenated without encoding [closed] - Furkan Gözükara Newest 'ffmpeg' Questions - Stack Overflow
  I have image A and it is PNG I have audio A and it is MP3 I have video B that can be any format, resolution, encoding, audio, etc Now I want to turn image A + audio A into video A with the exact attributes of video B so that I can concatenate them without encoding Here my so far code which is failing. I am using Python and latest version of FFMPEG with most codecs and features def get_video_info(video_path): cmd = [ FFPROBE_PATH, '-v', 'quiet', '-print_format', 'json',  (...)
• 03:41
  Integrating FFMpeg in Native Android Application with C++ results in bunch of errors [closed] - BraveEvidence Newest 'ffmpeg' Questions - Stack Overflow
  I need to integrate ffmpeg in my android app, i don't want to usee ffmpegkit as that is not properly maintained, i cloned ffmpeg-android-maker and then ran ./ffmpeg-android-maker.sh it created build folder and output folder, The output folder looks like this I have created a kotlin android project using android studio, so i have written all the code to pick the video and i have the video uri with me in kotlin, i also added a C++ module with help of Android studio and it did all the configuration in build.gradle and also created CMake file for me. For now (...) -- ffmpeg-android-maker, , Here
• 14:00
  Laravel in how we can upload large size video with Repeater data with multi language - Darshan Malani Newest 'ffmpeg' Questions - Stack Overflow
  In the Laravel how we can upload large size data with multiple language video as well once video upload i need it on chunk how we can do ? Here is DB structure once specific program upload chunk data i need something like this way with multiple lang based data -- ,
• 09:22
  ffmpeg gdigrab support prebuilt library - Haris Newest 'ffmpeg' Questions - Stack Overflow
  I am using this build for Windows 64 with MSVC compiler, I need to capture screen using C++ code using gdigrab, but I can see: Error: Input format not found: gdigrab So just checked using the code for gdigrab: const AVInputFormat *fmt = nullptr; void *opaque = nullptr; while ((fmt = av_demuxer_iterate(&opaque))) qDebug() << fmt->name; But does not print gdigrab Then I check the build config for ffmpeg using .\\ffmpeg.exe -buildconf Which do not include --enable-gdigrab But when I check the (...) -- build, https://github.com/BtbN/FFmpeg-Builds/issues/428

12 décembre

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:19
  Compiling ffmpeg with alpha channel support in libx265 [closed] - AnB Newest 'ffmpeg' Questions - Stack Overflow
  I need to encode a transparent video in the H.265/HEVC format. Recently, the x265 software encoder library used by ffmpeg has added support for the alpha channel (docs). I compiled ffmpeg as per the instructions from here with the required ENABLE_ALPHA option set during build of libx265. However, when I execute ffmpeg -h encoder=libx265, there are no supported pixel formats with the alpha channel: Encoder libx265 [libx265 H.265 / HEVC]: General capabilities: dr1 delay threads Threading capabilities: other Supported pixel formats: yuv420p yuvj420p yuv422p yuvj422p (...) -- docs, here