I'm pretty sure it's limited to H.264 and MP4, at least that's what Apple is saying on the tech specs page under "video formats." http://www.apple.com/appletv/

I'm pretty sure it's limited to H.264 and MP4, at least that's what Apple is saying on the tech specs page under "video formats." http://www.apple.com/appletv/specs.html http://www.apple.com/appletv/specs.html I still don't like the idea of having iTunes on a PC be necessary for me to play my video files. What if iTunes doesn't recognize certain file formats that I want to play? I'm SOL. I really like the AppleTV and will buy one, but it's not a media player in the same sense that XBMC or any of its decedents are. It's a player for the userbase who doesn't want to deal with storage, file formats or torrents. That's not me, but it is certainly a large # of people.