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ffmpeg demux into audio and video resets PTS - Stack …
https://stackoverflow.com/questions/51585661/ffmpeg-demux-into-audio-and-video-resets-pts
1 Demuxing I am demuxing TS segments into audio and video as follows. ffmpeg -y -i input.ts -vcodec copy -an output_video.ts ffmpeg -y -i input.ts -acodec copy -vn output_audio.aac Inspecting Input The start_pts and start_time on input.ts are as shown below. I was able to inspect these values using ffprobe -show_streams -print_format json input.ts
using ffmpeg to demux stream(video h.264 , audio aac) and ...
http://joyxu.github.io/2017/03/06/ffmpeg-demux-seek/
ffmpeg is a very famouse multimedia library.. ##There are several sites I think are very helpful for multimedia developer:## 1 ffmpeg detail. 2 ffmpeg decode procedure. 3 An ffmpeg and SDL Tutorial. ##Today I want to talk how to demux network stream by ffmpeg, the full procedure is as following:
FFmpeg as audio and video demuxer and decoder · Issue ...
https://github.com/godotengine/godot/issues/5226
FFmpeg ( http://ffmpeg.org/about.html) can decode almost every audio and video format and codec using one API. It is very portable. It can replace Theora, OGG, Vorbis, Opus and other libraries (Speex decoder in FFmpeg uses libspeex). It has also its own audio resampler (with audio channel expansion) and video scaler (with pixel format conversion).
#7334 (ffmpeg demux into audio and video resets PTS) – FFmpeg
https://trac.ffmpeg.org/ticket/7334
Demuxing I am demuxing TS segments into audio and video as follows. ffmpeg -y -i input.ts -vcodec copy -an output_video.ts ffmpeg -y -i input.ts -acodec copy -vn output_audio.aac Inspecting Input The start_pts and start_time on input.ts are as shown below. I was able to inspect these values using ffprobe -show_streams -print_format json input.ts
How can I extract audio from video with ffmpeg? - Stack ...
https://stackoverflow.com/questions/9913032/how-can-i-extract-audio-from-video-with-ffmpeg
ffmpeg has a default stream selection behavior that will select 1 stream per stream type (1 video, 1 audio, 1 subtitle, 1 data). -vn is an old, legacy option. It excludes video from the default stream selection behavior. So audio, subtitles, and data are still automatically selected unless told not to with -an, -sn, or -dn.
Demux all audio streams with ffmpeg - VideoHelp Forum
https://forum.videohelp.com/threads/385022-Demux-all-audio-streams-with-ffmpeg
A.) There is a second audio. In that case the output will have exactly one audio stream. No video, no subtitles. B.) There is no second audio. In that case ffmpeg will fall back to the default mapping (because that was the only -map option we used) which tries to select the first video, first audio and first subtitle.
[Ffmpeg-user] demux ts in one operation to keep audio ...
https://ffmpeg-user.ffmpeg.narkive.com/dDwN7uNd/demux-ts-in-one-operation-to-keep-audio-video-sync
of sync. Is there a way I can use ffmpeg, or mencoder or mplayer to demux a transport stream in one operation and keep the video in sync with the audio? I know how to run the commands separately twice, once for audio and once for video, but this leads to bad sync at the beginning of the files, and very very bad sync at the end of the file.
Demux Transport/Program Stream with FFMPEG | EddsWEB
https://eddsweb.wordpress.com/2013/03/11/demux-transportprogram-stream-with-ffmpeg/
echo This batch file will demux an MPEG asset to seperate video and audio retaining echo original bitrates. echo. echo The script will demux the video file and first audio track of the asset. echo. echo It is assumed the original MPEG asset is …
FFmpeg: Extract Audio From Video In Original Format Or ...
https://www.linuxuprising.com/2019/11/ffmpeg-extract-audio-from-video-in.html
Now that you know the original audio format, extract the audio from the video without re-encoding it using: ffmpeg -i myvideo.mp4 -vn -acodec copy audio.ogg Replace myvideo.mp4 with the video filename/path, and audio.ogg with the name you want to use for the audio output filename, and the extension.
FFMPEG demux concat dropping audio at stitch points ...
https://video.stackexchange.com/questions/22203/ffmpeg-demux-concat-dropping-audio-at-stitch-points
ffmpeg -i test.mp4 -ss 0 -t 5 test-1.mp4 ffmpeg -i test.mp4 -ss 5 -t 5 test-2.mp4 This is the root of evil. You almost never can split your audio/video with very high precise. Reasons for it: Non-integer FPS in video. You can't split non-integer number of frames, so if you use 29.997 fps, you can't get 149.985 frames in file.
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