The purpose is to speed up a video sequence, sorta like 2x, 4x, etc fast forward except ability to use any decimation ratio.

I have implemented this using Matlab which has an indexed aviread function. It can then write an avi using only the selected frames. I did try the studio plus 12 "speed" function, but that seems to be very expensive to render. There is some overhead time in taking a video clip to and from Matlab, but the processing is very fast.

Bob