GPUDirect for Video reduces the latency in moving video to and from a GPU when using video I/O cards. This enables ultra high performance , real time video processing using all the capabilities of NVIDIA's professional GPUs.

NVIDIA GPUDirect for Video is a free API that will allow 3rd party hardware companies to interface more directly with NVIDIA Quadro and Tesla professional GPUs to deliver video with the lowest possible latency. This technology is aimed at those who want to import video and export the video as fast as possible. The classic use case is broadcast graphics, but the medical imaging, manufacturing and defense industries are also ripe to take advantage of faster video processing.

See Greg Estes Blog Post 

Find out all the details at the GPUDirect For Video home page