I assume like many people I'm simply trying to find what formats the Apple TV will read and inside that container what it will read. Like Most I'm trying to convert MKV's and the like, that are in 720 and contain 5.1 AC3. VisualHub will convert the file but you are converting the video once again and usually with Skipping and stuttering. Next I can open then in QT Pro and its looks great but have found no way around a container that Apple TV will read. I have Tried Mp4, Mov and M4v formats with no luck. I have passed thru video in various formats tried pasting in AC3 but none have worked.. So as I see it now.. other than converting using VH has anyone had success with QT Pro NOT converting but passing the video through and somehow applying the 5.1 audio in a container Apple TV will play?