All I'm trying to do is get the 720P video I shot on my iPhone and edited in iMovie to be playable on my Apple TV in 720p. Can't for the life of me figure out how to do it. Use the "share" options in iMovie, and the 720p doesn't list the ATV as one of the compatible devices, but it will work on the iPhone! Tried exporting via Quicktime in iMovie, no go, still got reduced to 540p. Anyone?...