I don't know what's the problem with opera, i kept all this day try to find solution to this problem, the video in opera appears with a black screen like this video
but when i try to play it in firefox there is no problem with it, it's play with out any problem ,
and there more video in facebook and twitter have the same problem
opera version 51.0.2830.40
i can't do any thing without opera.
please tell me what to do
photos for problem