Having had great results so far with XP media centre, Transcode 360 and my Xbox 360 I have hit my first snag. I have had it playing DivX and XviD flawlesslyand even using the hack for transcode got it playing HD movies in .MKV format, but one thing has stumped me so far, and thats movies using the new .x264 video codec. I can get them to be recognised and they even start transcoding but after around 30 seconds they stutter then stop and transcode 360 tells me its finished. Has anyone managed to get these to play and can offer any help? Cheers.