Transcoding video takes ages and ATI decided to make this faster by using the GPU for these kind of tasks. ExtremeTech got their hands on a beta version of Avivo Transcode:
The application only works with X1000 series graphics cards, and it only ever will. That's the only architecture with the necessary features to do GPU-accelerated video transcoding well.More info over here.
So how fast is it? We shouldn't get into serious benchmarks while the application is in such an early state, but just to give you a taste of the numbers, we ran a few tests. Our test machine was an Athlon 64 X2 4800+ with 1 GB of very low latency RAM and a Radeon X1800 XT graphics card. We encoded a test clip from the movie The Rock,—a4-minute and 50-second clip that tends to be very tough on encoders. It's the same one we use in our CPU benchmarks..