http://revisionfx.com/
REVisionFX ReelSmart Motion Blur Pro - automatically add more natural-looking motion blur to a sequence using ReelSmart Motion Blur. Our tracking technology is at the heart of ReelSmart Motion Blur, so there is no handwork involved. Of course you can add as little or as much blurring as you need and even remove motion blur! Finally, you can create very interesting effects by blurring one sequence by using the motion from another.