30 juin

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

• 19:10
  ffmpeg dshow - Getting duplicate/dropped frames, I'm not doing anything - ENunn Newest 'ffmpeg' Questions - Stack Overflow
  I'm messing around with recording my capture card with ffmpeg. No matter what I do I get duplicate and dropped frames. I'm not even doing anything on my computer. Is there a fix for this at all? Here's my command. ffmpeg -hide_banner -rtbufsize 2G -f dshow -video_size 2560x1440 -framerate 60.0002 -pix_fmt bgr24 -video_pin_name 0 -audio_pin_name 1 -i video="AVerMedia HD Capture GC573 1":audio="AVerMedia HD Capture GC573 1" -async 1 -rtbufsize 1M -f dshow -sample_rate 48000 -i audio="Digital Audio (S/PDIF) (Sound Blaster X-Fi Xtreme Audio)" (...) --
• 18:03
  C++/FFmpeg VLC doesn't play 5.1 audio output - widgg Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert audio streams to AAC in C++. FFplay plays everything fine (now) but VLC still has problems with one particular situation: 5.1(side). FFplay only plays it if I filter 5.1(side) to 5.1. Filtering to stereo or mono works well and as expected. My setup right now is: send packet receive audio AVFrame apply filter resample to produce output AVFrame with 1024 samples (required by AAC) send new audio frame receive audio packet Weirdly enough, using FFmpeg's CLI converts my file properly. ffmpeg -i (...)
• 14:56
  Flutter ffmpeg_kit_flutter_new can't build Android app in any version - user31929 Newest 'ffmpeg' Questions - Stack Overflow
  I can't build my project on Android ( on Ios it works and the project itself without ffmpeg_kit_flutter_new builds without problems ) This is the error i obtain: /GeneratedPluginRegistrant.java:51: error: cannot find symbol com.antonkarpenko.ffmpegkit.MainActivity.registerWith(shimPluginRegistry.registrarFor("com.antonkarpenko.ffmpegkit.MainActivity")); ^ symbol: class MainActivity location: package com.antonkarpenko.ffmpegkit This is my flutter doctor : [✓] Flutter (Channel stable, 3.19.4, on macOS 15.4.1 24E263 darwin-x64, locale it-IT)  (...)
• 02:04
  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 (...)

29 juin

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

• 03:32
  Where to download avcodec.dll? [closed] - Олег Ю. Newest 'ffmpeg' Questions - Stack Overflow
  I see in the folder of some application FFMPEG files avcodec.dll, avformat.dll, avutil.dll, etc. They are all old version of FFMPEG. I wanted to update them, but I did not find where to download them on the FFMPEG website. Are these complete libraries available for download? Or do they exist only in development files and the authors of some application create FFMPEG .dll files themselves? In other words, avcodec.dll files from different applications are not interchangeable? Help me figure it (...)

28 juin

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

• 19:06
  Manim Animation Rendering Fails on Google Cloud Run: Segment Combination Issues [closed] - Ahaskar Kashyap Newest 'ffmpeg' Questions - Stack Overflow
  Problem Summary I'm running a Manim animation server on Google Cloud Run that successfully creates video segments but fails during the FFmpeg combination step. The behavior is inconsistent based on the number of segments created. Environment Platform: Google Cloud Run (8GB RAM, 4 CPU) Container: Debian 12 (bookworm) with Python 3.9.23 FFmpeg: 5.1.6 (with h264 support enabled) Manim: Latest version with -ql (480p15) quality setting Timeout: 240 seconds Observed Behavior Animation Complexity Segments Created Final (...)
• 12:00
  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 (...)

27 juin

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

• 16:26
  use ffmpeg to combine raspberry pi audio and video to send to youtube [closed] - CrabbyPete Newest 'ffmpeg' Questions - Stack Overflow
  I can stream video from my pi camera to youtube using this script libcamera-vid --inline --nopreview -t 0 --width 640 --height 480 --framerate 15 --codec h264 -o - | ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -thread_queue_size 1024 -use_wallclock_as_timestamps 1 -i pipe:0 -c:v copy -c:a aac -preset fast -strict experimental -f flv I have an i2s microphone board on the pi an can record audio using alsa and pulse audio using the command arecord -D pulse -f S16_LE -r 48000 -c 1 -d 10 test.wav Is there a way to edit the script to combine the (...)
• 21:47
  ffplay video playing with slider where i can slider to any position of the video - Eswar T Newest 'ffmpeg' Questions - Stack Overflow
  is it possible to slide to a specific location of video in FFplay? Like how we do in VLC when we open a video a slider will be a bottom using which we can move to any part of the video is it possible in ffplay? using either commands or any GUI
• 18:25
  Camera2 API switching camera during recording - Max Efimov Newest 'ffmpeg' Questions - Stack Overflow
  I'm working with Camera2 API and in my app it's important to switch the camera during recording. After each camera switch I save video fragment to disk, and after stopping the recording I merge videos into one using -f concat -safe 0 -i listPath -c copy finalPath command of FFmpeg for Android. When I open a separate video fragment, it looks correct, but when I open the merged video, videos recorded on the back camera are rotated 180 degrees. The problem is only in the merged video. In meta-tag of videos if video recorded on back camera, then "rotate" tag has 90 (...) -- FFmpeg for Android, MP4Parser Library
• 13:07
  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 (...)

26 juin

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

• 23:24
  FFmpeg: high quality animated GIF? [closed] - 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: /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: /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 generated at all. There are some tutorials that I came across but none (...) --
• 13:58
  Use an IP-camera with webRTC - Minz Newest 'ffmpeg' Questions - Stack Overflow
  I want to use an IP camera with webrtc. However webrtc seems to support only webcams. So I try to convert the IP camera's stream to a virtual webcam. I found software like IP Camera Adapter, but they don't work well (2-3 frames per second and delay of 2 seconds) and they work only on Windows, I prefer use Linux (if possible). I try ffmpeg/avconv: firstly, I created a virtual device with v4l2loopback (the command was: sudo modprobe v4l2loopback). The virtual device is detected and can be feed with a video (.avi) with a command like: ffmpeg -re (...) -- IP Camera Adapter, v4l2loopback
• 09:57
  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 (...)
• 00:01
  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  (...)

25 juin

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

• 06:04
  Create playable video with audio for vscode using ffmpeg [closed] - Camilo Martínez M. Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a function which adds an audio stream to a silent video using ffmpeg. According to this, in order to be able to play videos in vscode, we need to... make sure that both the video and audio track's media formats are supported. Many .mp4 files for example use H.264 for video and AAC audio. VS Code will be able to play the video part of the mp4, but since AAC audio is not supported there won't be any sound. Instead you need to use mp3 for the audio track. The following function already produces a playable video in vscode, (...) -- this, this

24 juin

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

• 22:03
  ffmpeg `-start_at_zero` with `-ss` does not seem to work as advertized in document [closed] - Wang Newest 'ffmpeg' Questions - Stack Overflow
  The command make the file name start from 0, instead of 60000 ffmpeg -ss 60 -i input.ts -copyts -start_at_zero -fps_mode passthrough -enc_time_base 0.001 -frame_pts 1 -vframes:v 10 "/tmp/outframes/tms%010d.png" but according to document the -start_at_zero should make the timestamp start with 60000. Is there anything I do wrong here? -copyts Do not process input timestamps, but keep their values without trying to sanitize them. In particular, do not remove the initial start time offset value. Note that, depending on the vsync option or on specific muxer (...)
• 15:18
  exe file not executing from deployed ASP.NET MVC app in TAS (Tanzu /PCF) - Darshan Adakane Newest 'ffmpeg' Questions - Stack Overflow
  I am facing an issue for my ASP.NET MVC web application on .NET 4 being deployed to TAS. I am trying to do image compression using ffmpeg.exe. While it is working on my local machine, I get an "500 internal server error" when deployed to TAS (tanzu application server). I am using hwc_buildpack and storing the file in Path.GetTemp() folder for testing. applications: - name: MyApp-Dev memory: 1G instances: 1 stack: windows buildpacks: - hwc_buildpack path: \\MyAppnew\\obj\\Release\\Package\\PackageTmp env: services: routes: - (...)
• 12:39
  Bootstrapping an AI UGC system — video generation is expensive, APIs are limiting, and I need help navigating it all [closed] - Barack _ Ouma Newest 'ffmpeg' Questions - Stack Overflow
  I’m building a solo AI-powered UGC (User-Generated Content) platform — something that automates the creation of short-form content using AI avatars, voices, visuals, and scripts. But I’ve hit a wall with video generation and API limitations. So far, I’ve integrated TTS and voice cloning (using ElevenLabs), and I’ve gotten image generation working. But video generation (especially talking avatars) has been a nightmare — both financially and technically. 🛠️ Features I’m trying to build: AI avatars (face + lip-syncing) Script generation (LLM-driven) Image (...)

23 juin

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

• 20:43
  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 (...)
• 12:44
  How to record video in mp4 extension in GUVCVIEW - Maverick Nolan Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use GUVCVIEW from https://sourceforge.net/p/guvcview/git-master/ci/master/tree/ I could able to stream and record videos in mkv, by default, but I'm facing synchronization issues between audio and video when I try to record video in mp4, with some modifications in code, as of this is my configurations Encoding format - H.264 HW Encoder - h264_v4l2m2m FPS - 30fps Supported Resolutions - 640x480, 1280x720 and 1920x1080 Extension to save - mp4 Library using - FFmpeg's libavcodec library In the above configurations if (...) -- https://sourceforge.net/p/guvcview/git-master/ci/master/tree/
• 08:06
  Could not find com.arthenica:ffmpeg-kit-full:6.0-2 - gabocalero Newest 'ffmpeg' Questions - Stack Overflow
  I started receiving this message when I build my project > Could not find com.arthenica:ffmpeg-kit-full:6.0-2. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - https://repo.maven.apache.org/maven2/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - https://jcenter.bintray.com/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - https://jitpack.io/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - (...) -- project's github page,
• 03:22
  How to change the video duration to be longer In ffmpeg [closed] - Adekxyan Newest 'ffmpeg' Questions - Stack Overflow
  I have a video where the video has a duration of 4 minutes, but when played, the video only runs for 16 seconds, but the timestamp continues to run from 00:00 to 04:00 quickly (16 seconds).

22 juin

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

• 09:21
  FFMPEG: Videos converted from FLV to MP4 does not play in iPod but works in iPhone - Shakti Singh Newest 'ffmpeg' Questions - Stack Overflow
  I used below command to convert videos from FLV,M4V to MP4. ffmpeg -y -i video_1336406262.flv -vcodec libx264 -vpre slow -vpre ipod640 -b 250k -bt 50k -acodec libfaac -ac 2 -ar 48000 -ab 64k -s 480x320 video_1336406262.mp4 The videos converted from M4V to MP4 are playing very well in both iPhone and iPod but the videos converted from FLV to MP4 does not work in iPod but does in iPhone. In the video area of HTML5 page iPod even does not show the play symbol. I am using the same command to convert from both FLV and M4V to (...)

21 juin

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

• 22:04
  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
• 09:18
  How to crop video with same aspect ratio such as DAR? [closed] - showkey Newest 'ffmpeg' Questions - Stack Overflow
  Some arguments in sample.mp4: ffprobe -i sample.mp4 2>&1 | grep DAR Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 310 kb/s, 30 fps, 30 tbr, 15360 tbn (default) In the sample.mp4,width is 1280,height is 720,SAR=1:1=1,so we get the DAR value: DAR = (width/height)*SAR = (1280/720) * 1 = (16*80)/(9*80) = 16:9 I want to crop sample.mp4 into width:496 and height:279, 496/279 = (31*16)/(31*9) = 16:9. ffmpeg -i sample.mp4 -vf "crop=496:279:0:0" output.mp4 Show DAR value (...)
• 00:07
  Facebook Reels Upload always failing - Evrard A. Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to upload Reels through Facebook Graph API. The video is created with the following ffmpeg command. cmd = [ 'ffmpeg', '-i', video_path, '-i', voice_path, '-i', music_path, '-filter_complex', '[1:a]loudnorm=I=-16:LRA=11:TP=-1.5,adelay=0|0[a1];' + '[2:a]volume=0.2,afade=t=in:ss=0:d=0.02,afade=t=out:st=28:d=0.03[a2];' + '[a1][a2]amix=inputs=2:duration=first:dropout_transition=0[aout]', '-map', '0:v:0',  (...) -- Facebook Reels video format recommandations

20 juin

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

• 13:38
  How to convert cmd pipe to powershell in context of binary data (ffmpeg and streamlink) - Filip Krawczyk Newest 'ffmpeg' Questions - Stack Overflow
  I'd like to convert a pipe of video stream between streamlink and ffmpeg from cmd to Powershell. But from what I searched powershell only supports piping objects. Is there any way to reproduce this in Powershell without using Start-Process -FilePath "cmd" -ArgumentList [...]? I'd prefer not to use it because I need access to the exit code. streamlink $stream_url best -O | ffmpeg -i pipe: "output_file.mp4" note: the line above had some args removed for better (...)
• 12:17
  "Could not find com.arthenica:ffmpeg-kit-https:6.0-2" after ffmpeg_kit_flutter deprecation - Tarun Hasija Newest 'ffmpeg' Questions - Stack Overflow
  I am at latest flutter 3.32.4 FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':ffmpeg_kit_flutter:compileDebugJavaWithJavac'. > Could not resolve all files for configuration ':ffmpeg_kit_flutter:debugCompileClasspath'. > Could not find com.arthenica:ffmpeg-kit-https:6.0-2. Required by: project :ffmpeg_kit_flutter * Try: > Run with --stacktrace option to get the stack trace. > Run with --info or --debug option to get more log output. > Run with --scan to get full (...)
• 09:27
  How to join two images into one with FFmpeg? [duplicate] - n2v2rda2 Newest 'ffmpeg' Questions - Stack Overflow
  There are two images: a.jpg and b.jpg. I just want to know how to join them into one image using ffmpeg. How should I finish the ffmpeg -i a.jpg -i b.jpg command to get a c.jpg output image? This is an example of what I am trying to achieve: a.jpg b.jpg c.jpg
• 00:37
  ValueError: No valid stream found in input file. Is -1 of the desired media type? - Haozhe Xie Newest 'ffmpeg' Questions - Stack Overflow
  While using torchcodec with the following code import torchcodec file_path = "/path/to/episode_000000.mp4" x = torchcodec.decoders.VideoDecoder(file_path, seek_mode="approximate") I got the following error: [rank0]: File "/home/hzxie/Development/vla/utils/datasets.py", line 202, in _get_video_bytes [rank0]: x = torchcodec.decoders.VideoDecoder(vbytes) [rank0]: File "/home/hzxie/Applications/miniconda3/envs/lerobot/lib/python3.10/site-packages/torchcodec/decoders/_video_decoder.py", line 98, in __init__ [rank0]: core.add_video_stream( [rank0]: File (...)
• 01:19
  Can't convert .ts files that downloaded from .m3u8 file to mp4 - smartnima Newest 'ffmpeg' Questions - Stack Overflow
  I Have This Files: 001.ts 014.ts 027.ts 040.ts 053.ts 066.ts 079.ts 092.ts 105.ts 118.ts 131.ts 144.ts 157.ts 170.ts 183.ts 196.ts 209.ts 222.ts 235.ts 248.ts 261.ts 274.ts 287.ts 300.ts 313.ts 326.ts 002.ts 015.ts 028.ts 041.ts 054.ts 067.ts 080.ts 093.ts 106.ts 119.ts 132.ts 145.ts 158.ts 171.ts 184.ts 197.ts 210.ts 223.ts 236.ts 249.ts 262.ts 275.ts 288.ts 301.ts 314.ts 327.ts 003.ts 016.ts 029.ts 042.ts 055.ts 068.ts 081.ts 094.ts 107.ts 120.ts 133.ts 146.ts 159.ts 172.ts 185.ts 198.ts 211.ts 224.ts 237.ts 250.ts 263.ts 276.ts 289.ts 302.ts 315.ts 328.ts 004.ts 017.ts (...)

19 juin

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

• 14:16
  Why does FFmpeg's xfade filter need the timebase and frame rate to match? [closed] - Hashim Aziz Newest 'ffmpeg' Questions - Stack Overflow
  As I discovered not long ago, and recently had to rediscover after trying to use it again, xfade - the crossfade filter that FFmpeg introduced in 2019 - requires that both inputs have a matching timebase (TBN) and frame rate (FPS). This is "resolved" by explicitly making them the same, by adding settb=AVTB and a hardcoded FPS to both streams (there doesn't seem to be a constant equivalent to AVTB for FPS) prior to using xfade: -filter_complex (...)
• 07:45
  executing bash command on each file in directory and renaming new generated file [closed] - Rolfbruge Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to modify an existing bash script to resample .mp3 files or resample/extract .mp3 sound track from .mp4 files. In each case renaming the output appears to be required by the ffmpeg syntax. An example to invoke ffmpeg from cli pertaining to .mp3 files one at a time: ffmpeg -i "filename" -ab 32000 -ar 22050 "newfilename" It gives me a syntax error: for element in $(find /media/mp3 -type f -name "*.mp3"); do (ffmpeg -i "$element" -ab 32000 -ar 22050) "$element".mp2 ; bash: syntax error near unexpected token `"$element".mp2'  (...)

18 juin

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

• 22:20
  FFmpeg: About filter_complex command [closed] - HJ Kim Newest 'ffmpeg' Questions - Stack Overflow
  I use this command. ffmpeg -i Input.mp4 -i logo.png -c:v h264_nvenc -filter_complex "[0:v]scale=-1:720[video];[1:v][video]scale2ref=(iw/ih)*ih/8/sar:ih/8[wm][base];[base][wm]overlay=10:10" output.mp4 But what does this mean? scale2ref=(iw/ih)*ih/8/sar:ih/8

17 juin

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

• 16:46
  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/
• 16:07
  Text on video ffmpeg - Jesper Madsen Newest 'ffmpeg' Questions - Stack Overflow
  How can I add text overlay on my video in ffmpeg? i.e. given a video "video1.flv", how can I add "StackOverflow" text during the whole video, positioned in the middle of the screen, with white text and a border?

16 juin

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

• 20:18
  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/
• 17:48
  How can I convert audio to WAVE_FORMAT_PCM using FFmpeg? - Eric Stdlib Newest 'ffmpeg' Questions - Stack Overflow
  I am using Python's wave module to read audio, and using FFmpeg to convert audio from other types to wav. However, I am encountering some problem. I wrote v.py to generate an silence audio file a.wav import sys, wave, math import numpy as np wave_data = np.zeros(44100).astype(np.short) f = wave.open('a.wav', 'wb') f.setnchannels(1) f.setsampwidth(2) f.setframerate(96000) f.writeframes(wave_data.tostring()) f.close() Then I used FFmpeg to "copy" a.wav to b.wav (though it seems to encode / (...)
• 15:19
  I don't know the time unit to use for av_dict_set to set a timeout - ICYMYM Newest 'ffmpeg' Questions - Stack Overflow
  I am confused. I am using the av_dict_set function to set a time-out, but when I searched for information about av_dict_set, the time unit seems to be different. I don't know how to set it now. Can anyone help? I found some code like the following: pFormatCtx = avformat_alloc_context(); av_dict_set(&opts, "rtsp_transport", "tcp", 0); //av_dict_set(&opts, "timeout", "5000000", 0); if(strncmp(stream_url, "rtmp:", sizeof("rtmp:")) == 0) av_dict_set(&opts, "timeout", "6", 0); // in secs else if(strncmp(stream_url, "http:", (...)

15 juin

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

• 17:37
  Piping pi's opencv video to ffmpeg for Youtube streaming - Mango Plaster Newest 'ffmpeg' Questions - Stack Overflow
  This is a small python3 script reading off picam using OpenCV : #picamStream.py import sys, os from picamera.array import PiRGBArray from picamera import PiCamera import time import cv2 # initialize the camera and grab a reference to the raw camera capture camera = PiCamera() camera.resolution = (960, 540) camera.framerate = 30 rawCapture = PiRGBArray(camera, size=(960, 540)) # allow the camera to warmup time.sleep(0.1) # capture frames from the camera for frame in camera.capture_continuous(rawCapture, (...)

14 juin

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

• 11:02
  Recording of rtsp stream with automatic video segments [closed] - ToD Newest 'ffmpeg' Questions - Stack Overflow
  It is necessary to capture video in ffmpeg so that it works continuously without restarting. I don’t need to re-encode it, just capture it, and I need it to automatically divide the video into 2-minute segments and name the files according to the current time. I managed to do it, but without segmentation, by running a loop, but the gap between pieces of video is about 9 seconds. Stream rtsp from IP-camera. Help please.
• 10:06
  AWS Lambda failed to resolve hostname in child_process spawn - warly Newest 'ffmpeg' Questions - Stack Overflow
  i'm trying to get ffmpeg working in AWS Lambda reading from and writing to S3. I crawled through dozens of aws documentations, stackoverflow questions and blog posts. All do it slightly different, but in the end none of them worked for me. So I hope to find help here :) I sticked to the tutorial from InPlainEnglish: https://plainenglish.io/community/automated-video-processing-with-aws-lambda-and-ffmpeg-2834b7 The ffprobe command does work, so ffmpeg is callable. But when calling ffmpeg within a child_process.spawn command i get the error Failed to resolve hostname (...) -- https://plainenglish.io/community/automated-video-processing-with-aws-lambda-and-ffmpeg-2834b7
• 06:02
  Extract clips from different videos, and merge them into one video, using ffmpeg [closed] - mikef Newest 'ffmpeg' Questions - Stack Overflow
  I want to extract multiple clips from different videos (in different encoding schemes/formats), and then merge them into one video. The inputs are a list of files and precise timestamps of the clips: [ ("1.mp4", ["00:05:02.230", "00:05:05.480"]), ("4.mp4", ["00:03:25.456", "00:03:28.510"]), ("2.mp4", ["00:12:23.891", "00:12:32.642"]), ("2.mp4", ["00:12:44.236", "00:12:46.920"]), ("3.mp4", ["00:02:06.520", "00:02:11.324"]), ("1.mp4", ["00:06:23.783", "00:06:25.458"]), ("2.mp4", ["00:03:53.976", "00:03:56.853"]), ... ] Option 1: (...)
• 02:04
  Right way to use vmaf with ffmpeg - dravit Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to calculate the VMAF score of a processed video wrt the original file. Command I have used: ffmpeg -y -loglevel info -stats -i original.mp4 -i processed.mp4 -lavfi "[0]null[refdeint];[refdeint]scale=1920:1080:flags=neighbor[ref];[1]setpts=PTS+0.0/TB[b];[b]scale=1920:1080:flags=neighbor[c];[c][ref]libvmaf=log_fmt=json:phone_model=1:model_path=model_path_here/vmaf_v0.6.1.json:n_subsample=1:log_path=log.json" -f null - Now as per the official documentation of vmaf with ffmpeg found here, it says source/reference file followed by the (...) -- here, https://medium.com/@eyevinntechnology/keep-an-eye-on-the-video-quality-b9bcb58dd5a1, https://websites.fraunhofer.de/video-dev/calculating-vmaf-and-psnr-with-ffmpeg/

13 juin

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

• 09:58
  FFmpeg RTSP stream to remote MediaMTX server disconnects after a few seconds [closed] - Rorschy Newest 'ffmpeg' Questions - Stack Overflow
  I'm new to RTSP and MediaMTX, and I'm trying to live stream my screen using FFmpeg and MediaMTX for a specific use case. Everything works perfectly when both FFmpeg and MediaMTX run on the same machine. However, when I move MediaMTX to a remote server, the stream becomes unstable — I can't maintain a connection or view the stream reliably. Here is the FFmpeg command I'm using from the client machine: ffmpeg -f gdigrab -framerate 10 -offset_x 0 -offset_y 0 -video_size 1920x1080 -i desktop -f lavfi -i anullsrc -vcodec libx264 -tune zerolatency -g 30 (...)
• 09:31
  How to convert an MJPEG stream to YUV420p, then hardware encode to h264 on rpi4 using go2rtc and frigate? [closed] - Josh Pirihi Newest 'ffmpeg' Questions - Stack Overflow
  I am putting together a dashcam/dvr/reversing camera system for my van. I am using some analogue HD reversing cameras and AHD to USB dongles along with a Raspberry Pi 4. The pi is running frigate in docker, it has a fresh Raspberry Pi OS installed. The AHD dongles show up straight away as /dev/video0 when plugged in. I am running into an issue getting the MJPEG stream from the dongle to be accepted by the hardware h264 encoder. I am able to feed the hardware encoder with the raw YUYV 4:2:2 stream, however due to bandwidth limitations this cuts the framerate intolerably low (720p (...) --
• 09:32
  ffmpeg how to set max_num_reorder_frames H264 - Vasil Yordanov Newest 'ffmpeg' Questions - Stack Overflow
  Anyone know how can I set max_num_reorder_frames to 0 when I am encoding H264 video ? You can find in the docs as uint8_t H264RawVUI::bitstream_restriction_flag PS. Based on the discussion in the comments. What I actually want to accomplish is to have all the frames written in the order in which they were encoded. My use-case is - I have 1000 images for example. I encode each one of them using the codec, but then when I investigate a little bit and check the actual packets in the H264 container, I see that I have cases when one frame is written twice (for example ... (...) -- docs

12 juin

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

• 15:14
  How to install ffmpeg for ubuntu using command line? - Cheng Jaycee Jiang Newest 'ffmpeg' Questions - Stack Overflow
  A lit background... This is a piece of code in my Dockerfile. I want to deploy my app to google app engine. Somehow I couldn't install ffmpeg. ENV VIRTUAL_ENV /env ENV PATH /env/bin:$PATH RUN apt-get install ffmpeg This is error log: E: Unable to locate package ffmpeg The command '/bin/sh -c apt-get install ffmpeg' returned a non-zero code: 100 ERROR ERROR: build step "gcr.io/cloud-builders/dockerⓐsha256:ef2e6744a171cfb0e8a0ef27f9b9a34970341bfc0c3d401afdeedca72292cf73" failed: exit status 100 I found (...)

11 juin

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

• 13:15
  FFMPEG - Image extraction stretch problem [closed] - karmasan Newest 'ffmpeg' Questions - Stack Overflow
  I have a .mov video file with 1440x1080 resolution. I extracted the frames from the video, using scale -vf scale=1440:-1 but the images are stretched. Even though, the dimension of the extracted images are 1440x1080, the image is stretched on the height dimension and doesn't match the aspect ratio of the video. How can I solve this issue? Here is the output from FFMPEG for the original video: Stream #0:0(eng): Video: qtrle (rle / 0x20656C72), rgb24(progressive), 1440x1080, 624445 kb/s, SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 25 tbn (...)
• 23:00
  ffmpeg combine images to video and specify duration for each image? [duplicate] - hanshenrik Newest 'ffmpeg' Questions - Stack Overflow
  Can ffmpeg combine images to a video with a specific duration for each image? For example, i want 1.jpg to be displayed for 100 ms, and 2.jpg to be displayed for 120 ms, and 3.jpg to be displayed for 115 ms, and so on.. can ffmpeg do this? I have a bunch of images, each image has their own timestamp, and the timestamps decides how long each image should be in the video.. This is similar to question Conversion of images to video with variable fps using FFmpeg , but unlike that post, I do not need a gradual increase, but I rather need to specify the duration of each (...)
• 16:56
  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 (...)

10 juin

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

• 16:40
  Is this a problem in my command, the stream, or FFMPEG itself? [closed] - Ali Mustafa Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to download a section from approximately 06:40:00 to 06:44:00 from this stream: https://kick.com/grossgore/videos/8d36c089-ff2b-4167-9c92-bc8a3a9d033b I found the m3u8 URL: https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8 I run the following command: ffmpeg -ss 06:40:00 -to 06:44:00 -i https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8 -c copy out.mp4 The command runs for a while, but for some reason the output file is (...) -- https://kick.com/grossgore/videos/8d36c089-ff2b-4167-9c92-bc8a3a9d033b, https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8
• 08:08
  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

9 juin

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

• 09:50
  Extract motion vectors from h264 using hardware codec [closed] - adore Newest 'ffmpeg' Questions - Stack Overflow
  I am writing program to extract motion vectors from stream (videofile or webcam). While i am using software decoder everything seems ok, but when i trying to change decoder from h264 to h264_rkmpp, then and error, that appears in console: RgaBlit(1465) RGA_BLIT fail: Invalid argument RgaBlit(1466) RGA_BLIT fail: Invalid argument handl-fd-vir-phy-hnd-format[0, 17, (nil), (nil), 0, 0] rect[0, 0, 640, 480, 640, 480, 2560, 0] f-blend-size-rotation-col-log-mmu[0, 0, 0, 0, 0, 0, 1] handl-fd-vir-phy-hnd-format[0, 0, 0x9f70c30, (nil), 0, 0] rect[0, 0, 640, 480, 640, (...)
• 12:49
  I detected an error downloading a twitch tv stream. I use ffmpeg. That error stops the download, how can I fix it? [closed] - sort35ofn Newest 'ffmpeg' Questions - Stack Overflow
  I wanted to perform a download via ffmpeg of a video streamed live on the Twitch tv platform. I have windows 10 and I use cmd to run ffmpeg. The command I use to download the concert is: ffmpeg.exe -i "m3u8-link" -c copy name.ts I once downloaded with yt-dlp, but noticed that the quality was noticeably lower, at least using the following command: yt-dlp.exe -f (bestvideo+bestaudio/best) "amazon-channel-link" That's why I prefer to download with ffmpeg. Normally I haven't had any problems with downloads. But this is already the third time (not (...)
• 18:25
  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. When I try to decode the file harp.wav everything runs fine, and I can plot the samples as in the image plot-harp.png The file is a WAV file encoded as: pcm_u8, 11025 Hz, 1 channels, u8, 88 (...)
• 12:59
  How to cut one track from one big flac file (16 tracks) [closed] - Павел Дёмин Newest 'ffmpeg' Questions - Stack Overflow
  There is a flac file + log to it. The file weighs more than 200 MB and contains 16 tracks. I need to cut track number 3 from it. How to do this in ffmpeg? Read offset correction : 48 Overread into Lead-In and Lead-Out : No Fill up missing offset samples with silence : Yes Delete leading and trailing silent blocks : No Null samples used in CRC calculations : Yes Used interface : Installed external ASPI interface Used output format : Internal WAV Routines Sample format : 44.100 Hz; 16 Bit; Stereo TOC of the extracted CD Track | Start | Length (...)

8 juin

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

• 17:41
  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 (...)
• 05:38
  FFmpeg function avformat_open_input for USB video device throws exception: No such file or directory - ffvideoner Newest 'ffmpeg' Questions - Stack Overflow
  Windows & C# & FFmpeg.AutoGen I used the ffmpeg-function (from library FFmpeg.AutoGen) to show video from rtsp-stream: ffmpeg.avformat_open_input(&pFormatContext, "rtsp://127.0.0.1:8554/abc", iformat, null); It works right. Now I want to use this function for USB video device. FFmpeg outputs this device name: ffmpeg -list_devices true -f dshow -i dummy [dshow ⓐ 0000000000163000] "GENERAL WEBCAM" (video) This is how I'm trying to get the video: string deviceName = "GENERAL WEBCAM"; or string deviceName = (...)

7 juin

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

• 16:07
  FFmpeg/DASH: duration or timestamp out of range for mov/mp4 format [closed] - 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 (...)
• 16:15
  How to stream from camera to browser using ffmpeg [closed] - Gabriel Furstenheim Newest 'ffmpeg' Questions - Stack Overflow
  FFMpeg just merged support for WebRTC. If I understand correctly, this should allow to stream directly from ffmpeg to a website without the use of a server. How does this work? ffmpeg -f dshow -i video=MyCamera ??? I guess something similar to I'm guessing something like ffmpeg -f dshow -i video=MyCamera -f webrtc udp://localhost:6666 Also, how would the website look like? For simplicity, assume that everything happens in (...) -- just merged support for WebRTC.
• 16:02
  How to install pytorch and opencv using a fixed conda channel order? - progquester Newest 'ffmpeg' Questions - Stack Overflow
  Conda creates a pristine environment, configures a fixed channel order, and then starts installing pytorch torchvisioni pytorch-cuda and opencv, and it prompts for dependency conflicts. Do I have to install opencv via pip? The same thing happens with python 3.10 $ conda create -n my_env3.9 python=3.9 $ conda activate my_env3.9 $ conda install pytorch torchvision pytorch-cuda=11.8 opencv Channels: - pytorch - nvidia - conda-forge - defaults Platform: linux-64 Collecting package metadata (repodata.json): done Solving environment: (...)

6 juin

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

• 14:37
  How to solve javacv ExceptionInInitializerError [closed] - shihui wei Newest 'ffmpeg' Questions - Stack Overflow
  I want to combine multiple images into a gif. I chose ffmpeg. I learned that there are binary dependencies including ffmpeg in java, so I chose javacv First, I added the dependency of javacv to my pom file： org.bytedeco javacv-platform 1.5.11 Then I wrote a code to synthesize GIF from multiple images. public static byte[] encodeGif(List frames, int frameDelayMs, boolean loopForever) if (frames == null || frames.isEmpty()) throw new IllegalArgumentException("frames 不能为空"); int width = frames.get(0).getWidth(); int (...)
• 02:43
  ffmpeg - SIGSTOP generate moov atom - user2828522 Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg in a script that does "motion detection". The principle is as follows: ffmpeg is launched then immediately stopped with a "killall -s STOP ffmpeg"; at each motion detection, a "killall -s CONT ffmpeg" is sent to the program in order to record the sequence; after X seconds, a "killall -s STOP ffmpeg" is sent pending a new motion detection. When ffmpeg records following a SIGCONT, it is possible to properly stop ffmpeg with a "killall -s QUIT ffmpeg" and thus generate the atom moov. However, I can't find a way to (...)

5 juin

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

• 13:49
  FFMPEG: embed current time in milliseconds into video [closed] - stevendesu Newest 'ffmpeg' Questions - Stack Overflow
  I would like to embed the computer's local time in milliseconds into a stream using FFMPEG. I can embed the local time in seconds using drawtext like so: ffmpeg -i -vf "drawtext=text='%localtime\\:%T'" -f flv Looking through the documentation for drawtext, doing some tests, and Googling around, it seems like localtime and gmtime don't provide milliseconds -- just seconds. However the pts options does have milliseconds: ffmpeg -i -vf "drawtext=text='%pts\\:hms'" -f flv I also found out that pts supports (...)
• 11:03
  Building ffmpeg-kit for android - kish0n Newest 'ffmpeg' Questions - Stack Overflow
  I want to create an AAR dependency for my Android project, where I only convert video to audio files and use ffprobe to extract media information. https://github.com/arthenica/ffmpeg-kit I am using the below command for generating the AAR file: ./android.sh -d --enable-android-media-codec --enable-android-zlib --enable-lame --enable-shine --enable-opus --enable-libvorbis --disable-arm-v7a-neon --disable-x86 --disable-x86-64 --disable-arm-v7a When I import the AAR file to my project I get this error in the runtime: java.lang.ClassNotFoundException: Didn't find (...) -- https://github.com/arthenica/ffmpeg-kit
• 09:40
  Scrolling Effect of an Image using FFmpeg [closed] - neeebzz Newest 'ffmpeg' Questions - Stack Overflow
  I want to create an mp4 video of 40 seconds where an image just floats from top to bottom and vice versa. I am using the following ffmpeg command: ffmpeg -loop 1 -t 40 -i ./input.jpg -filter_complex [0]scale=800:-1[s0];[s0]crop=h=450:w=800:x=0:y=(ih-450)*(3*pow(t/40.241\\,2) - 2*pow(t/40\\,3))[s1];[s1]scale=800:400[s2] -map [s2] -pix_fmt yuv420p -preset medium -r 30 -vcodec libx264 ./output.mp4 -y The animation is working as expected however the motion is very jerky. How can I smooth it out? Ffmpeg (...)

4 juin

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

• 02:18
  I am really confused with this kind of compilation error( C ffmpeg Qt) - David Tree Newest 'ffmpeg' Questions - Stack Overflow
  I downloaded the latest ffmpeg source code and successfully installed it on Ubuntu But I failed to compile a simple demo.(I did included proper headers) Here are the error messages ,just to name a few: error: unknown type name 'AVFrame' error: 'NULL' undeclared (first use in this function) error: request for member 'streams' in something not a structure or union error: 'AVMEDIA_TYPE_VIDEO' undeclared (first use in this function) error: expected expression before ')' (...)

3 juin

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

• 18:38
  Screen Recording Issues using Python and FFMPEG [closed] - Kevin McDowell Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to record a walkthrough of a 3D space contained within a Chrome browser session. The goal is to create deterministic output. If I run this command from a VS Code terminal, it records 30 seconds of video from the window that's about 6MB: ffmpeg -f gdigrab -framerate 30 -i "title=My3D - Google Chrome" -t 30 "My3D - Google Chrome_screenRecording_v0.mp4" However, if I call it from Python like so: subprocess.run("ffmpeg -f gdigrab -framerate 30 -i \\"title=My3D - Google Chrome\\" -t 15 \\"My3D - Google Chrome_screenRecording_v0.mp4\\"") The output video (...)
• 20:01
  ffmpeg failed - 455 Method Not Valid in This State - paty.r15 Newest 'ffmpeg' Questions - Stack Overflow
  I created a Node.js app that gets an RTSP stream with FFmpeg to analyse it with OpenCV 3. It is working if I install FFmpeg and OpenCV in my local. But now I created a Docker image that contains the installation of those libraries and I'm using it as a base to create another image & container where I'm trying to run my app. When I run it inside that container I get this error over and over again when trying to get the RTSP stream with an FFmpeg instruction for method SETUP failed: 455 Method Not Valid in This State This is how I am installing FFmpeg (...)

2 juin

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

• 03:51
  App Store Submission Fails Due to Unsupported Architectures and Invalid Segment Alignment [closed] - Ahsanur Rahman Newest 'ffmpeg' Questions - Stack Overflow
  I’m using ffmpegkit in my iOS app, but when I submit the app to the App Store, I get these errors: Validation failed Unsupported Architectures. The executable for MyApp.app/Frameworks/ffmpegkit.framework contains unsupported architectures '[x86_64]'. (ID: 3e35bca7-7b8f-4c2b-bfb2-a27c8ad70c45) Validation failed Unsupported Architectures. The executable for MyApp.app/Frameworks/libavcodec.framework contains unsupported architectures '[x86_64]'. (ID: fd864260-dae3-4816-bdf3-ca7389374242) Validation failed Unsupported Architectures. The (...)
• 15:28
  How to add a fake microphone to android emulator running on linux headless - Red Newest 'ffmpeg' Questions - Stack Overflow
  Trying to add a microphone to the android emulator running on Linux headless. Host as no microphone so I need to create fake one and simulate playing some random music for my android test. In emulator command there is a option to use the host audio as input, by passing -allow-host-audio but it is not working on the phone. How to create virtual microphone Start the pusleaudio pulseaudio -D --exit-idel-time=-1 Create the fake mic pactl load-module module-null-sink sink_name=FakeSink pactl load-module module-remap-source master=FakeSink.monitor (...)
• 07:07
  Attempting to parse an m3u8 file in FFmpeg with mismatched extensions and formats - Daniel Melo Newest 'ffmpeg' Questions - Stack Overflow
  As I attempt to parse an m3u8 file thats being downloaded over the air, it utilizes "html" as an extension to represent the ts video slices. Even with the command being written as follows: ffmpeg -allowed_extensions ALL -i https://.../master.m3u8 -codec copy ./out.mkv It still produces the following error: detected format mpegts extension none mismatches allowed extensions in url (...)/page-0.html Could there be a way to ignore this format and extension (...)

1er juin

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

• 16:52
  FFmpeg video from image plus audio length issue - blackbrayn Newest 'ffmpeg' Questions - Stack Overflow
  I'm having issues regarding the output video length when using the following code which seems to work for everybody else. On a input mp3 of 04:56 I get a 05:09, the last part is only the image, no sound, for a longer mp3 input file I get more silent video at the end. I'm using the "-shortest" option just before the output file as an argument , as suggested in other threads around stackoverflow/superuser. ffmpeg -loop 1 -i image.jpg -i audio.mp3 -c:v libx264 -tune stillimage -c:a aac -strict experimental -b:a 192k -shortest out.mp4 I already changed the (...)