Converting mkv to Apple TV format

[Ol!ver]

I'm trying to convert mkv x264 files to something that will play on my Apple TV. People reckon visualhub does it, but I keep getting files out the other end with just stereo sound. That's with selecting 'Apple TV 5.1' as the profile.

Am I being thick?

Cheers

 

[Ol!ver]

Hi, the originals do indeed have 5.1 sound, but I haven't done anything in advanced setting. I just selected ATV 5.1 and go nuts.

EDIT: Ah, might have figured it. The video I was trying was a 5.1 DTS track, not DD. Is there a way to convert DTS ?