I have a gen 3 Apple TV hooked to my LG 50PA5500. I would like to try running the 709 .mp4 files over Airplay but not sure if its possible. I would think I'd have to come up with some kind of chapterized container which then would be imported into iTunes, then i could flip between the calibration files using the Apple TV remote. What program should I use to create the container? Also, I know the ATV 3rd gen is 1080p capable, but is iTunes, even when running 1080p content?