You probably want "-f bestaudio" instead of "--extract-audio". The former will download just the audio and skip the video which is significantly faster (and che

You probably want "-f bestaudio" instead of "--extract-audio". The former will download just the audio and skip the video which is significantly faster (and cheaper when on a metered connection). However you will have to do the conversion to MP3 yourself afterwards (e.g. with ffmpeg) if you want that format specifically.