Disclaimer: I've never put videos on an iPhone before. With the resolution on the screen of the iPhone 4 being so amazing, I wanted to put a few short videos on there to show it off. I've watched quite a few HD videos on Youtube, but obviously I'm not always going to be near a wi-fi connection. So, I downloaded a few movie trailers from iTunes so I could show them to people whenever I wanted (and since they're free), but they won't sync to the phone. I get an error message saying that they won't play on the iPhone. Obviously, I downloaded the 1080p versions of these, but I don't understand what the problem is. If you don't know how to get around this problem, could you at least recommend some things I could get from iTunes that WILL play in HD on the iPhone? Thanks.