X-video bitstream acceleration (xvba), designed by amd for its ati/amd radeon gpu, is a future 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. currently, the portions designed to be offloaded by xvba onto the gpu are motion compensation (mo comp) and inverse discrete cosine transform (idct), and vld (variable-length decoding) for mpeg-2, mpeg-4 avc (h.264) and vc-1 encoded video.

this driver only works with the proprietary fglrx driver from amd.