I made s short screencast of how to convert those MKV files to MP4 files so they can play on XBOX 360, PS3 and Apple TV.
What ingredients will you need:
An HD MKV file (obviously)
Perian QuickTime codec
Subler
A QuickTime Pro License for Quicktime 7
1st, install Quicktime 7 from the Snow Leopard DVD and then license it.
2nd, follow the [...]