getting info from video formats

Hi. I want to enable video and flash for my CMS, but that requires that i can read at least the dimensions of a video file.. ImageMagick's "identify" command supposedly reads AVI and MPEG, but i can't get it to work on my avi's: C:\Users\rene\Documents\Downloads>identify Stargate.Atlantis.S05E02.HDTV.XviD-0TV.avi identify: Not enough pixel data `Stargate.Atlantis.S05E02.HDTV.XviD-0TV.avi'. So if ImageMagick isn't the tool to use for video files, i wonder if there is any other tool that i can use to determine the size of video files. I'd like to be able to read as many of the major video formats (AVI, XVID, DIVX, QT, etc) as possible.