.avi might work i'm not 100 percent tbh, i just know mkv for sure will not
you can test by posting a small avi here and seeing if it'll play
the tampermonkey install is easy though, takes a couple seconds even if you're retard
I'd get some error from google chrome saying i cant play the video because it is overplayed or something.
I never managed to run it with ublock and umatrix running, so I'd rather watch the movie in a separate tab or download it before and watch it with a video player.