Video: 

VC-1 @ ~20mbps

playback Cyberlink PowerDVD 7.3 or Media Player Classic with Windows Media format 11 installed (VC-1 included i think)

Vista all ready have VC-1 decoder

Audio:

Dolby Digital 2.0 @ 640kbps

Dolby Digital Plus 5.1 @ 640kbps

Play Dolby Digital 2.0 with AC3Filter

Container:

Matroska (mkv) ( http://matroska.org/)

use Haali media Splitter

http://haali.cs.msu.ru/mkv/