Anonymous 03/13/2016 (Sun) 04:22:38 No. 2298 del
If you use youtube-dl you can stream it to mpv, it's a bit annoying to do every time though. You could also use the open with addon, or whatever it's called to simplify it a bit.

But I did go on freech the other day and saw an mkv file that was streamable in-browser. So odilicuck pls fix.