Hmm, I little forgot that thread. And you're right - it's the same problem I described twice (although thank you for answering it now). Today I was trying to use this old plugin Universal Graphics Viewer Plugin (not working or I don't know how to force it to work) and that's why I using internal viewer again and trying to make the same workarounds (for pixelated videos) like half year ago (I have mixed videos and photos in some directories).