Media Player and .mp4 files?

[chilliwilli]

Ok guys, been digging for quite sometime with no luck. I just converted some DVD's using Handbrake. Converted to .mp4 files at 480xdefault. all files are around half a gig to a gig. What is boggling me is why do some play fine and others will jsut play the audio of the movie through windows media player. With handbrake all movies were converted to mp4 files, of course quicktime and itunes see all movies fine and plays fine as far as that goes my TP will see all the movies, see the size, properties everything its jsut that some play fine and other will only output audio with NO video. Is there another player I could use? or is it a codec issue with WMP that I can update?

Thanks for any and all help anyone can give me. This is driving me insane!

Sorry for the double psot. It wount let me delete it!