Throw us a linky or two that doesn’t work for you and we can test them using VLC and other browsers and narrow down a possible root cause for you.
Bump! This is the easiest, quickest way to a solution.
I would send direct links, but that won’t narrow it down. Sometime the videos work fine, other times it’s green. Same videos. What i did find is if i shut down my laptob and reboot, the problem goes away. But then, it will start with the green screen again after awhile. It’s weird.