uh .. spam video. How large is the video file size? Any video which links to websites is usually a dangerous file .. tries to find out your identity, maybe tell you to download a codec (which is in fact a virus), etc.

Movie download issues (click on blue link) (2nd last post has information on best video formats.)

I would also recommend checking files with VLC - (click on link) because it does not link to websites if there is such a hyperlink inside the file. And VLC has all codecs within the program itself so will play almost all video files you find on the Gnutella network. It is a safer & more reliable program to use than WMP, RealPlayer or QuickTime player or some others.