Audio conversion to get a one-hour mp3 file under 100 MB
ffmpeg -i input.mp3 output.mp3
Extract album art from an input file
ffmpeg -i input.mp3 -an -vcodec copy cover_%03d.jpg
Display album cover art in supported terminals
# Note: uses `viu`, which you can install on macos with `brew install via`
# https://github.com/atanunq/viu
# Note: -w, for width, is in text columns, I think?
viu -w 20 cover.jpg
Delete album art from an input file
# Note: `-map 0:a` strips all but the audio, ie it omits all images
ffmpeg -i input.mp3 -map 0:a output.mp3
Add album art from cover file
ffmpeg -i input.mp3 -i cover.jpg -map 0 -map 1 -c copy output.mp3
