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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
FFmpeg removes input timestamp offset unless set otherwise. The MPEG-TS muxer also adds a timestamp offset. You can preserve source timestamps when remuxing TS, and also avoid the muxer's offset, like this, ffmpeg -y -copyts -i input.ts -vcodec copy -an -muxdelay 0 -muxpreload 0 output_video.ts. As .aac is a raw ADTS stream, there is no codec ...
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:
#7334 (ffmpeg demux into audio and video resets PTS) – FFmpeg
https://trac.ffmpeg.org/ticket/7334
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
If you only extract audio from a video stream, the length of the audio may be shorter than the length of the video. To make sure this doesn't happen, extract both audio AND video with the same call to ffmpeg, e.g. "ffmpeg -i vid.avi -map 0:a audio.wav …
FFmpeg as audio and video demuxer and decoder · Issue ...
https://github.com/godotengine/godot/issues/5226
It has also various audio and video filters which can be used. FFmpeg is optimized for performance, e.g. libvorbis is slower than built-in FFmpeg Vorbis decoder: ffmpeg -i Test.ogg -acodec pcm_s16le -f wav - &> /dev/null - 0.51 sec oggdec -o - Test.ogg &> /dev/null - 0.87 sec. FFmpeg can be linked statically or dynamically.
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.
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.
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