to my knowledge you can't get squares from yt-dlp. Strawberry Music Player has a feature to download and embed the cover from MusicBrainz, I usually use that (I have to correct the tags from yt-dlp most of the time anyways). I think Picard has that too, but I don't use that.
Some questions about yt-dlp
cross-posted from: https://mander.xyz/post/14609590...
Which distro do you believe deserves more recognition?
For me it's PeppermintOS....