Play YouTube videos with MPV...

I want to open YouTube videos in a new mpv window. I can copy the video url and run "mpv <url>" and that works just fine. But I can't get any of the Chrome extensions that purportedly support this to work - I can install them, but none of them will actually open the video in mpv and several of them don't even add an item to the context menu for playing the video. What I'd REALLY like would be to re-target the "click on video thumbnail" action to use mpv instead of native play, but according to ChatGPT that's simply not allowed.

Anyway, has anyone gotten this to work in Brave browser? Thanks in advance - hope you're all doing great out there!