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Muxing Audio — Natron 2.5.0 documentation
https://natron.readthedocs.io/en/rb-2.5/guide/tutorials-ffmpeg-audio.html#:~:text=Muxing%20audio%20is%20a%20process%20to%20add%20audio,video.mp4%20-i%20audio.wav%20-c%3Av%20copy%20-c%3Aa%20aac%20output.mp4
FFmpeg to the Rescue: Muxing Audio and Video Files ...
https://streaminglearningcenter.com/learning/ffmpeg-to-the-rescue-muxing-audio-and-video-files.html
Interestingly, FFmpeg converted the MP3 audio to AAC and muxed the file without so much as an informational message. Just for fun, I converted audio.mp3 into a wav file and tried this: ffmpeg -i video.mp4 -i audio.wav -c:v copy -c:a copy muxed.mp4. As before, FFmpeg converted the WAV file to AAC and produced the muxed file.
c++ - Muxing from Audio and Video files with FFmpeg ...
https://stackoverflow.com/questions/16768794/muxing-from-audio-and-video-files-with-ffmpeg
If you are encoding both video and audio. Then you will first need to create video stream and then audio stream. However if you want to just encode only audio then you will need to create just audio stream. if (pkt.stream_index ==st->index) is normally required when you are transcoding i.e when you are change container format.
How to merge audio and video file in ffmpeg - Super User
https://superuser.com/questions/277642/how-to-merge-audio-and-video-file-in-ffmpeg
If your audio or video stream is longer, you can add the -shortest option so that ffmpeg will stop encoding once one file ends. Copying the audio without re-encoding If your output container can handle (almost) any codec – like MKV – then you can simply copy both audio and video streams: ffmpeg -i video.mp4 -i audio.wav -c copy output.mkv
ffmpeg Documentation
https://ffmpeg.org/ffmpeg.html
out1.mkv is a Matroska container file and accepts video, audio and subtitle streams, so ffmpeg will try to select one of each type. For video, it will select stream 0 from B.mp4, which has the highest resolution among all the input video streams. For audio, it will select stream 3 from B.mp4, since it has the greatest number of channels.
FFmpeg/muxing.c at master · FFmpeg/FFmpeg · GitHub
https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/muxing.c
" This program generates a synthetic audio and video stream, encodes and \n " " muxes them into a file named output_file. \n " " The output format is …
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