Hi, I've been searching many forums now for an answer to my question: I don't really remember what it was that may have caused the problem, but probably it was a new codec that I installed. The OS I'm working with is XP, no program (Media Player, Winamp, Quicktime,...) will play my mpg's and I'm sure they aren't corrupt. I then tried to get me some mpeg-codecs, but that wouldn't work either. The players are able to show about 1 or 2 seconds of video and sound, but then the display is freezed and then black. Also they show a false length of the movie (If 10 min, they calculate about 1 min). I am very thankful for any help.