Hi everyone, author here. I was quite impressed to use this functionality in the awesome iina player [1], but it a Mac-only app so I made this for Linux and I plan to make it work also on Windows and Mac. I use mpv as my main video player so I needed something like this to stream videos from youtube and whatnot (any website supported by youtube-dl). Enjoy!
[1] https://github.com/iina/iina