ffmped convert audio loss of code example

Example 1: ffmpeg m4a to mp3

ffmpeg -i input.m4a -c:a libmp3lame -q:a 8 output.mp3

Example 2: ffmpeg change audio codec from m4a to mp3

ffmpeg -i "$f" -codec:v copy -codec:a libmp3lame -q:a 2 newfiles/"${f%.m4a}.mp3";