Example of two urls:

https://rateyourmusic.com/release/musicvideo/%E9%9D%92%E8%91%89%E5%B8%82%E5%AD%90/%E3%81%84%E3%81%8D%E3%81%AE%E3%81%93%E3%82%8A%E2%97%8F%E3%81%BC%E3%81%8F%E3%82%89/

https://rateyourmusic.com/release/video/ensemble-for-new-music-tallinn-arash-yazdani/in-vain/

The first can be added to a standalone recording, but the second can't be added to the existing recording, and it's not really a release by our standards. Here's the entry in question: https://musicbrainz.org/recording/bf4c1fd7-ff87-4992-af8e-77b6aeb2af2b