This is directly from the Apple iPhone Tech page: "Video formats supported: H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats." Since I have an TV and an iPhone, I figured I was better off ripping my DVDs at 640px @ 1500kbps as a good compromise to keep from having to encode more than once (720 for Apple TV, 480 for iPhone). Last night I left the "Planet Earth" series ripping and it looks like I accidentally let a couple episodes rip at 720x400 instead of 640x356. I realized this, and tried putting the video on my iPhone to see if it would sync/play and it looks like it had no problem doing so. I'm curious now why this might be. My only thought is that the resolution limit means 640 x 480 = 307,200px limit and well 720 x 4800 = 288,000px. Anyone know what the deal is? I'd like to know if I can rip my videos at full DVD resolution and have them play on both the iPhone and the TV before continuing with the rest of my DVD collection.