69 articles

1er avril

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

19:05
FFmpeg WASM Custom build : defining custom flags - Ettur Newest 'ffmpeg' Questions - Stack Overflow

I wish to create custom ffmpeg.wasm build Now the official GUIDE show four commands "make dev" "make prd" etc So I cloned THE REPO and ran "make prd". It did build, but obviously, this build was with default settings, whatever exactly they made be. So pardon my stupidity, as I cannot figure out how / where / what do I edit to set the custom flags about what I want to be included / excluded in the build? -- GUIDE, THE REPO
13:02
Use FFMPEG and i have one video 30sec i want mulipal trimming - aryan patel Newest 'ffmpeg' Questions - Stack Overflow

i want this video trim mulipal like 0.2 sec to 0.5, 0.10sec to 0.14sec and 0.23 to 0.29sec this video trimed success after i want this trimed 3 video merge and create one video and save that any one can know me how
12:59
ffmpeg decoding mixing frames - Paulo Morgado Newest 'ffmpeg' Questions - Stack Overflow

I'm using FFmpeg.AutoGen in a .NET 8.0 application for decoding H264 and JPEG. Every usage uses its own instance (there are no shared objects) and there isn't simultanous use of each object. However, they can be used from different threads. But I'm getting the encoded results with mixed data from all sources. It happens mostly for the same origin codeec, but not esclusivelly. I have a base class that looks like this: public abstract unsafe class Decoder : IDisposable protected readonly object sync = new(); protected AVCodecContext* (...) -- FFmpeg.AutoGen
13:26
How to restream IPTV playlist with Nginx RTMP, FFmpeg, and Python without recording, but getting HTTP 403 error? [closed] - boyuna1720 Newest 'ffmpeg' Questions - Stack Overflow

I have an IPTV playlist from a provider that allows only one user to connect and watch. I want to restream this playlist through my own server without recording it and in a lightweight manner. I’m using Nginx RTMP, FFmpeg, and Python TCP for the setup, but I keep getting an HTTP 403 error when trying to access the stream. Here’s a summary of my setup: Nginx RTMP: Used for streaming. FFmpeg: Used to handle the video stream. Python TCP: Trying to handle the connection between my server and the IPTV source. #!/usr/bin/env python3 import sys import (...)
08:32
Merge multiple hls playlists - Boris Newest 'ffmpeg' Questions - Stack Overflow

I want to speed up the process of HLS segmentation of .mp4 video. Now, processing a half-hour video can take about 5 minutes, and that is too long. To do this, I decided to split the video into fragments, process each of them in parallel, and then create an .m3u8 file that will contain a list of .ts files from all the resulting playlists in the correct order. I used the next commands: ffmpeg -i original.mp4 -acodec copy -f segment -segment_time 10 -vcodec copy -reset_timestamps 1 -map 0 output_time_%d.mp4 for splitting the original video to .mp4 fragments 10 seconds (...)
06:46
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 (...) -- , , , ,
03:39
How to do low-latency streaming on FFMPEG - Wewd Newest 'ffmpeg' Questions - Stack Overflow

I'm attempting to make video streaming with latency as low as possible at 50ms or lower if possible, assuming that it's streaming over LAN. The latency is like 200-400ms with the config. I'm not sure what's the problem is. ffmpeg -init_hw_device d3d11va \\ -filter_complex "ddagrab=0:output_fmt=auto:framerate=60" \\ -c:v av1_amf -usage ultralowlatency -rc 1 -async_depth 1 -g 60 -fps_mode vfr \\ -fflags nobuffer -flags low_delay -strict experimental \\ -sdp_file stream.sdp -f rtp rtp://225.0.0.1:55555 stream.sdp v=0 o=- 0 0 IN IP4 (...)
03:14
Why does my yuva444p video always lose alpha channel after transcoding to vp9? - Ian Ye Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert a video with alpha channel using FFmpeg, but the transparency information gets lost in the output. Here is the input video (prores, yuva444p) detail with ffprobe: Stream #0:1[0x2](und): Video: prores (4444) (ap4h / 0x68347061), yuva444p12le(bt709), 360x480, 73314 kb/s, 60.13 fps, 60 tbr, 600 tbn (default) Metadata: creation_time : 2019-05-21T21:23:03.000000Z handler_name : Core Media Video vendor_id : appl encoder : Apple ProRes 4444 And my command is below: ffmpeg -i alpha_prores.mov -c:v libvpx-vp9 -pix_fmt (...)
00:13
How can I build a custom version of opencv while enabling CUDA and opengl? - 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 (...)

31 mars

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

22:40
avcodec/nvenc: unify CBR filler data insertion for all codecs - Cameron Gutman git.videolan.org Git - ffmpeg.git/rss log

avcodec/nvenc: unify CBR filler data insertion for all codecs Previously, AV1 used filler data with CBR by default while H.264 and HEVC may or may not depending on driver version. Make this consistent by using not filler data in CBR mode for all codecs. Since there are valid reasons to use CBR with or without filler, also add a cbr_padding option to allow users to override this. Signed-off-by: Cameron Gutman <aicommanderⓐgmail.com> Signed-off-by: Timo Rothenpieler <timoⓐrothenpieler.org> [DH] libavcodec/nvenc.c [DH] libavcodec/nvenc.h [DH] libavcodec/nvenc_av1.c [DH] (...)

ginger’s thoughts http://blog.gingertech.net/

21:49
SWAY at RFWS using Coviu - silvia ginger’s thoughts

A SWAY session by Joanne of Royal Far West School. http://sway.org.au/ via https://coviu.com/ SWAY is an oral language and literacy program based on Aboriginal knowledge, culture and stories. It has been developed by Educators, Aboriginal Education Officers and Speech Pathologists at the Royal Far West School in Manly, NSW. Category: Array Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post SWAY at RFWS using Coviu first appeared on ginger's thoughts.
21:49
PARADISEC catalog for Users - silvia ginger’s thoughts

This screencast shows how a user of the PARADISEC catalog logs in and explores the collections, items and files that the archive contains. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Users first appeared on ginger's thoughts.
21:49
PARADISEC catalog for Collectors - silvia ginger’s thoughts

Screencast of how to use the PARADISEC catalog for managing and publishing collections. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Collectors first appeared on ginger's thoughts.
21:49
PARADISEC catalog for Administrators - silvia ginger’s thoughts

Screencast of how a PARADISEC administrator uses the PARADISEC catalog for managing the consistency of metadata and staying on top of uploaded files. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Administrators first appeared on ginger's thoughts.
21:49
Silvia Pfeiffer Live Stream - silvia ginger’s thoughts

Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post Silvia Pfeiffer Live Stream first appeared on ginger's thoughts.

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

15:01
swscale/swscale_unscaled: Actually use X2->RGBA64 conversions - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

swscale/swscale_unscaled: Actually use X2->RGBA64 conversions The conversion functions were added in e7382b4d0101f02e61fdf5ad2c48aca500bb413f, yet they were never really enabled. Found via -ffunction-sections and --gc-sections. Reviewed-by: James Almer <jamrialⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] libswscale/swscale_unscaled.c
06:38
doc/encoders: Move FFV1 encoder to video encoder section - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

doc/encoders: Move FFV1 encoder to video encoder section It is not an audio encoder. Reviewed-by: Gyan Doshi <ffmpegⓐgyani.pro> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] doc/encoders.texi

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, (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

12:40
tests/checkasm: fix wrong summation of bench time - Niklas Haas git.videolan.org Git - ffmpeg.git/rss log

tests/checkasm: fix wrong summation of bench time This was changed 8 years ago with the introduction of the linux-perf path, with seemingly no justification at the time. Likely a developer oversight from testing. This bug not only made --runs completely ineffective, but also meant that we didn't actually correctly filter out outliers. Fixes: e0d56f097f42bcdbe6c3b2f57df62a4da63f2094 [DH] tests/checkasm/checkasm.h
10:18
tests/swscale: use hex format for flags values - Niklas Haas git.videolan.org Git - ffmpeg.git/rss log

tests/swscale: use hex format for flags values [DH] libswscale/tests/swscale.c

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

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 (...)

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" --

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

10:06
avformat/rtpenc: Check dimensions during init - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/rtpenc: Check dimensions during init Also fixes a -Wdeclaration-after-statement warning. Reviewed-by: Michael Niedermayer <michaelⓐniedermayer.cc> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] libavformat/rtpenc.c

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

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

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

01:07
avcodec/dxa: Remove set-but-unused variable - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avcodec/dxa: Remove set-but-unused variable Forgotten in 6e80ec9dc5d7ea83c3abac641aa08ad7849c9e98. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] libavcodec/dxa.c

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

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

10:36
avcodec/ffv1enc: Add -remap_optimizer option - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/ffv1enc: Add -remap_optimizer option This allows tuning how much effort (time) the encoder spends on optimizing the remap table Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] doc/encoders.texi [DH] libavcodec/ffv1.h [DH] libavcodec/ffv1enc.c
08:23
avcodec/ffv1enc: Eliminate RemapEncoderState - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/ffv1enc: Eliminate RemapEncoderState Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/ffv1enc.c
08:17
avcodec/ffv1enc: Eliminate copy_state - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/ffv1enc: Eliminate copy_state Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/ffv1enc.c
00:52
avcodec/ffv1enc: Better heuristic for selecting mul values. - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/ffv1enc: Better heuristic for selecting mul values. This increases the search space from the hardcoded 17 tables to ~ 23^512 tables The mul_count choice is chosen by bruteforce All testcases tried, improve Sponsored-by: Sovereign Tech Fund Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/ffv1enc.c

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, (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

15:21
avcodec/ituh263enc: Add necessary #if checks for FLV encoder - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avcodec/ituh263enc: Add necessary #if checks for FLV encoder Fixes compilation in case where the FLV encoder is disabled with any other H.263 based encoder enabled. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] libavcodec/ituh263enc.c
21:56
avutil/hwcontext_vulkan: stop checking for deprecated and removed flag - llyyr git.videolan.org Git - ffmpeg.git/rss log

avutil/hwcontext_vulkan: stop checking for deprecated and removed flag AV_VK_FRAME_FLAG_CONTIGUOUS_MEMORY was deprecated in e0f2d2e70228d022195afccc057bd6dc8b688c21 and removed in 09a57602991d47011247f2683f32a53255adcf09 Fixes: e0f2d2e70228d022195afccc057bd6dc8b688c21 Fixes: 09a57602991d47011247f2683f32a53255adcf09 [DH] libavutil/hwcontext_vulkan.c
16:15
avcodec/raw: Duplicate raw_pix_fmt_tags into fourcc2pixfmt tool - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avcodec/raw: Duplicate raw_pix_fmt_tags into fourcc2pixfmt tool Do this instead of exporting raw_pix_fmt_tags via avpriv_get_raw_pix_fmt_tags(). For shared builds this will lead to an increase in the combined size of the lavc and fourcc2pixfmt binaries (because the overhead of exporting avpriv_get_raw_pix_fmt_tags() is dwarfed by the size of the array), but given that fourcc2pixfmt is a test tool that is not widely distributed it does not really matter. For static builds the opposite is true (the rest of lavc/raw.o is no longer pulled into the test tool and the getter can be removed, (...)

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

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 (...)

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16:21
vulkan_functions: add note to update ff_vk_extensions_to_mask - Lynne git.videolan.org Git - ffmpeg.git/rss log

vulkan_functions: add note to update ff_vk_extensions_to_mask Otherwise, the extension looks like its enabled, but isn't actually used by anything. [DH] libavutil/vulkan_functions.h
15:47
vulkan_loader: remap video_maintenance2 in ff_vk_extensions_to_mask - Lynne git.videolan.org Git - ffmpeg.git/rss log

vulkan_loader: remap video_maintenance2 in ff_vk_extensions_to_mask This was broken. [DH] libavutil/vulkan_loader.h
12:49
vulkan_decode: allow using NULL offsets/nb_slices in ff_vk_decode_add_slice() - Lynne git.videolan.org Git - ffmpeg.git/rss log

vulkan_decode: allow using NULL offsets/nb_slices in ff_vk_decode_add_slice() For codecs like VP9 which use a single slice. [DH] libavcodec/vulkan_decode.c
12:47
vulkan_decode: allow using NULL sequence_params when decoding - Lynne git.videolan.org Git - ffmpeg.git/rss log

vulkan_decode: allow using NULL sequence_params when decoding The function had some checks to allow for this, but as it always tried to dereference a bufferref, it wasn't fully ready. [DH] libavcodec/vulkan_decode.c
12:44
lavu/vulkan: skip adding NULL buffers as deps in ff_vk_exec_add_dep_buf - Lynne git.videolan.org Git - ffmpeg.git/rss log

lavu/vulkan: skip adding NULL buffers as deps in ff_vk_exec_add_dep_buf Allows for cleaner code. [DH] libavutil/vulkan.c
02:03
avcodec/mjpegenc: Don't allocate unnecessarily much memory - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avcodec/mjpegenc: Don't allocate unnecessarily much memory We need to allocate space for 64 coefficients per block; 24dbc4c2e82481f89d6fcacee1949e5038c5c2fc wanted to perform the calculation 64*sizeof(MJpegHuffmanCode) at compile time, yet in the end did it in a way that made it allocate 64 times as much memory as needed. Reported-by: Michael Niedermayer <michaelⓐniedermayer.cc> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] (...)

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

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

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20:13
avformat/rtpenc: Add flag AVFMT_NODIMENSIONS. - Koushik Dutta git.videolan.org Git - ffmpeg.git/rss log

avformat/rtpenc: Add flag AVFMT_NODIMENSIONS. Not all rtp formats require the video dimensions to be available up front. H264 and HEVC will send them as stream parameters. The flag is restrictive and prevents RTP repacketization without parsing the codec information out of the stream. This change checks to see if the codec parameters are available on the rtp formats that need it. Signed-off-by: Koushik Dutta <koushdⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] (...)
08:05
fate/vcodec: Test non-default b_strategy - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

fate/vcodec: Test non-default b_strategy With this modification the test would have caught the regression introduced in 72bf3d3c12ae562fd408603483bc59058757b1a1. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] tests/fate/vcodec.mak [DH] tests/ref/vsynth/vsynth1-mpeg4-adap [DH] tests/ref/vsynth/vsynth3-mpeg4-adap
07:38
avcodec/mpegvideo_enc: Set b-frame chain length properly - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avcodec/mpegvideo_enc: Set b-frame chain length properly Fixes a regression caused by my desire to use loop-scope for iterators in 72bf3d3c12ae562fd408603483bc59058757b1a1. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐoutlook.com> [DH] libavcodec/mpegvideo_enc.c

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

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22:12
checkasm: vp8dsp: Use checkasm_check_padded in check_mc - Martin Storsjö git.videolan.org Git - ffmpeg.git/rss log

checkasm: vp8dsp: Use checkasm_check_padded in check_mc Signed-off-by: Martin Storsjö <martinⓐmartin.st> [DH] tests/checkasm/vp8dsp.c

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