I've just got an Apple TV, I have several home movies I wanted to add. I ripped the original disks using Handbrake and used the pre selectable settings for Apple TV.

It produced a 2.2GB MPEG-4 file, however it gives a message "Unable to play on Apple TV" even though other MPEG-4 files play.

Any ideas why?

Any suggestions or other software to try?

I just want the highest resolution possible.