YouTube to audio

Just in case anyone needs it, and for my personal future reference.

# install if needed: https://github.com/yt-dlp/yt-dlp
./yt-dlp_macos -f 234 -o "download.%(ext)s" <youtube-url>

# install if needed
brew install ffmpeg

# Convert
ffmpeg -i download.mp4 -q:a 0 -map a audio.mp3

Update: And I just realized via How to download an MP4 from YouTube, every time - Jeff Geerling that it could be done even easier.

yt-dlp -f 234 --recode mp3 <youtube-url>