Converting m4a to mp3

 03/12/2024 -  ~1 Minute

Install ffmpeg. Your mileage may vary, as every OS has a different way to install the package. However, it is universally available. You will also need libmp3lame, if you don’t have have it. For me, I used nix-shell.

nix-shell -p ffmpeg
ffmpeg -i input.m4a -c:v copy -c:a libmp3lame -q:a 3 output.mp3

This is copying the video, which is a NOP since there is no video, and converting the audio with libmp3lame. The -q:a 3 is a quality setting; the lower the number, the better the quality (three seems like a good value).