"MythTV project developers announced 5,000 commits from the 0.21 release to the new 0.22. The release notes include the major features and changes. Among them is the graphical interface port to the new libmythui library that uses OpenGL painters and makes theme creation easier, enabled by the general upgrade from Qt3 to Qt4 in the project.
"Playback of the H.264, MPEG-1/2, WMV and VC-1 video formats now allows rendering using the Video Decode and Presentation API for Unix (VDPAU) option of the current NVIDIA graphics cards."