[Libav-user] Merging several audio streams into one

Gustav González xtingray at gmail.com
Sun Mar 20 16:28:22 EET 2022

In my current implementation, I was able to process several audio files,
extract their streams, and added them to a new mp4 file successfully. The
outcome of my latest test is an MP4 file with a video stream and three
audio streams.
When I reproduce the file, I can watch the video but the player only
reproduce the first audio stream, the other two are ignored.
I am guessing I will have to merge all the audio streams in just one. So,
my question is this: is it possible to merge several audio streams into
just one? I appreciate any hint.

  Gustav Gonzalez
  xtingray at gmail.com
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