A friend of mine uploaded a video of our friends and after downloading it, i couldn't open it. With VLC, it eitehr gets stuck on the first frame or doesn't show anything at all, but the sound works. With Quicktime, it gives a "this movie could not be opened. This file is not a movie file." I know it's a movie file, and I know it works on windows. Any ideas? PS. I've installed the latest quicktime, v. 7.2.