youtube-dl -f "bestaudio[ext=m4a]" --add-metadata URL does the same automatically. Or if you want to transcode it to MP3: youtube-dl -f bestaudio -x --aud

youtube-dl -f "bestaudio[ext=m4a]" --add-metadata URL does the same automatically. Or if you want to transcode it to MP3: youtube-dl -f bestaudio -x --audio-format mp3 URL Some other relevant invocations at https://stackoverflow.com/questions/49804874 https://stackoverflow.com/questions/49804874