I have one machine, on which I can't see video when I open file, I can only hear sound. So I have installed K-Lite codec pack as I always do. Now I can see video, but there is no sound. WTF?!? I didn't see this problem before.
It is not general sound problem, because I can normaly open and play sound files, everything is OK. In Media Player Classic, there is mute icon in down right corner, and I can't change it. In WMP10 everything is OK, but no sound.
It is a MOV file.