I have tried to play several H.264 720p video samples on my EVO, and I get sound but no video. Two examples are the Simpsons trailer and the Fantastic Four trailer at H.264 Demo Clips | H264info.com I get no error, and I have tried the Android media player and several others (which are no doubt using the same API's underneath). Is it expected that video will not play for these files? Obviously the phone's screen would not be able to play them in full detail but I didn't expect that it could not play them at all. What is the point of having 720p resolution over HDMI when the phone can't play videos at that resolution? Or is it that it supports some particular type of H.264 and these videos aren't supported? Or is it actually trying to output directly through HDMI and I see nothing since I don't have it hooked up? UPDATE: I transcoded these sample trailers using Handbrake, and even when I end up with a LARGER file size they do play at 720p. But if I use the high quality preset, they do not work even at a low bitrate at 720p. So it's something about the "advanced options" that determines whether the EVO can play it or not.