You can DL and listen to a longish YT track without the video - in far less time and with (usually) better audio - by specifying format 251 (usually available).
For example, an hour-long performance video mp4 at 1280x720 gets you 96k audio and 280MB. 'youtube-dl -f 251 url' will get you a 160K Opus in 54 MB.
To my ears Opus sounds sweeter and fuller than mp3. At 64K and lower bit-rates, it's near the top.
For example, an hour-long performance video mp4 at 1280x720 gets you 96k audio and 280MB. 'youtube-dl -f 251 url' will get you a 160K Opus in 54 MB.
To my ears Opus sounds sweeter and fuller than mp3. At 64K and lower bit-rates, it's near the top.