VAAPI
From MythTV Official Wiki
Video Acceleration API is a successor to XvMC, providing partial and full hardware offloading of video decoding. This interface is available on Intel graphics. Interface frontends are also available for ATI's XvBA and nVidia's VDPAU. VAAPI in MythTV is under development for 0.24 (#8593, [25202], [25204], [25256], [25868], [26098])
In case you would like to test the VAAPI/XvBA backend, you'll need the Splitted Desktop libraries (libva >= 0.31.1 and xvba-video) drivers from here
To test the VAAPI, take the latest trunc and compiled with ./configure --disable-vdpau --enable-vaapi
