Setinterval + rewind effect

Hello

I have made a movie… on sthg like 300 frames… the movies works fine, but at some point, let’s say between frames 200-250 the movie looks too slow and I would like to accelerate just those frames while playing the movie and leave the other frames at the regular speed…

I’ve run a search in the forums about setintervals… found some stuff but I can’t get to understand how it works… can anyone post sthg about it? just how to accelerate those frames?

My second request is sthg very particular… when I arrive at the end of the movie I played, I would like to move to rewind to the start, like a very fast rewind effect of all the frames… like if you put your DVD player on rewind and watch it very fast on your TV… any hint on how to do that? and the speed would have to be real fast as wel so I need to know how to change that speed too!!!

Tricky he he

Thanx guys