I've digged all over google but I can't find any solution to my problem.
Firefox works pretty well. I have this issue only with chromium and only with youtube. I have no problem watching videos at any other site with chromium.
When I try to watch a video a black screen occurs and after a while it gives me the warning "an error occurred". Weirdly, sometimes when I try a couple of refreshing it starts to play but then the issue occurs again.
I tried removing-reinstalling chromium or the flash plugin but it did not do any good.
Best Answer
The correct answer is here: https://askubuntu.com/a/316722/93826
To solve the issue you have to update the chromium ffmpeg codec to the
extraversion:sudo apt-get remove chromium-codecs-ffmpegsudo apt-get install chromium-codecs-ffmpeg-extra