I know that there are alot of Spotify downloaders that download the metadata from Spotify and then download the audio from Youtube, but currently I don’t use Spotify and I have my playlists on Youtube, is there any way to add the metadata to my songs or download them with the metadata?
yt-dlp (with --add-metadata) puts the channel name in the artist field and the video title as the track name. With --embed-thumbnail, it uses the thumbnail as the album art. This can all work, but only if your artist puts just the name in the title, and uses the album art as the thumbnail. The problem is when they don’t.
yt-dlp can’t really do anything about poor metadata at the source though.
Another option would be to skip the metadata from YouTube and use MusicBrainz Picard on the downloaded files.
Right, forgot I wanted to mention that. Also, if you don’t want to use such a fancy tool, many media players have a simple tag editor built in.