I read on this forum a few months ago that ESiR releases are preferred by the majority of posters. I downloaded quite a few and have come across a common problem. With DXVA enabled, certain movies will not play, or will play with severe visual artifacts. My setup has the MPC h264 filter as the preferred decoder and the Cyberlink PDVD8 as the backup. I use both MPC home cinema and Vista Media Center for playback. The Windows XP system has a Geforce 8800 GTS, while the Vista system uses an integrated Geforce 9400. On non DXVA compliant MKV encodes, the MPC filter will disable itself and the PDVD filter will only display a black screen. I do not have the full list of non DXVA compliant releases, but the black screen occurs on "The Adventures of Robin Hood" and "Batman Gotham Knight." Artifacts occur on "Patton." Anyone using DXVA with these videos and not having issues?