I just purchased a Chaintech MPM800-3 motherboard for use as a frontend. It has a PM800 Unichrome chipset that supports XvMC. If I compile my frontend with XvMC support, will it be used only for MPEG-2 content or will I be using it for all playback (and have the greyscale OSD) including MPEG-4 (which all my recordings currently are). Thanks, Kevin