Well, I just put Avatar onto my iPad (MP4 format) and it synced flawlessly, however I just tried to put 2010 onto my iPad (also MP4 Format) and it plays fine in iTunes, but when I click sync, it doesn't sync it... I've tried manually clicking which videos to sync, etc, but it just won't work. It's as if iTunes is ignoring all my other movies except Avatar.
Also, all of my movies play fine when in the Movies tab of iTunes, but they just get ignored by iTunes and won't sync. All of my movies are in MP4 format.
Someone please help because I have a ton of videos that I want to put on, but none will sync.