Ok so I just tried PS3 Media Server for the first time today and at it seems to work flawlessly with AVI's. For the past year I have accumulated a huge collection of MP4's which were originally 720p MKV's. I encoded all of them using Visual Hub. If I use PS3 Media Server, all of them show up as corrupted data. I tried using Media Link and some will play, others won't. Anyone have any ideas why these won't play? Is there a special way to encode them for the PS3?