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
should be able to do this, which audio format would you prefer to have?
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.
I personally have a Bash script that kicks up a yt-dlp Docker image.
You can try Ytmdl, there’s even a web version