I've been having this issue for quite a while now where viewing videos on Twitter would return the "This browser does not support video playback" error. But now it's gotten to the point where when certain gifs (for whatever reason) don't play either. I've searched a fix over the past year or so but never found one. I assume it has something to do with HTML5? As Youtube videos wouldn't work either until I downloaded the Youtube Flash Player App. My flash is kinda dated, I don't really tend to update Flash all that much since I only visit Youtube, Twitter and Imgur. Plus all the versions are the same... security filled flaws. Besides that's not the problem since even with a updated version of Flash, it never fixed the problem in the past. If anyone knows the reason and how to fix it, that would be great. PS: Should be noted that it works in Opera and Chrome but Opera sucks and Chrome is a ram hogger.