Could not find tag for codec amr_nb in stream #1, codec not currently supported in container

[shiv71]

I am getting this issue in android emulatror api level 28,29,30

E/mobile-ffmpeg: [mp4 @ 0xe61aa710] Could not find tag for codec amr_nb in stream #1, codec not currently supported in container
E/mobile-ffmpeg: Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument

[Aditya94A]

Were you able to find a solution for this? This seemed to be have worked well with bravobit library..

[Krutika-chotara]

Did you found any solution? I am also facing same issue in emulator with api level 30.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[xeroxoid]

The problem seems to be that MP4 containers do not support the amr_nb codec.

To fix this we just re-encoded the audio of the file using the -acodec aac flag instead of -acodec copy. Mind you the flag can also be written as the aliased versions -c:a aac and -c:a copy