MhadbwoY - I feel sorry for you. The problem was that his card does not support H264 decoding of 1080p profile videos. His card might be able to handle 720p since it's a VP1 capable card, but that's about it.
So to re-enforce the fact - nVidia G80 cards cannot decode 1080 H264 video files. nVidia kinda screwed the naming convention and threw a lot of people off. You can read more on the WIKIPEDIA ARTICLE on the subject.