X-Video Bitstream Acceleration
X-Video Bitstream Acceleration (XvBA), designed by AMD Graphics for its Radeon GPU and APU, is an arbitrary extension of the X video extension (Xv) for the X Window System on Linux operating-systems. XvBA API allows video programs to offload portions of the video decoding process to the GPU video-hardware.
Source: Wikipedia — X-Video Bitstream Acceleration (CC BY-SA 4.0)