Hardly seemed with a TIL post because it was too easy, but I learned gpt-4 is proficient at building working ffmpeg commands. I wrote the prompt

convert m4a to mp3 with ffmpeg

and it responsed with

ffmpeg -i input.m4a -codec:v copy -codec:a libmp3lame -q:a 2 output.mp3

Since the problem at hand was low stakes, I just ran the command and, to my satisfaction, it worked. Language models can’t solve every problem but they can be absolutely delightful when they work.