A playmode to do the following would be handy;

start playing loop from a specified inframe, but from the first loop ignores the set inframe.

I.e: movie is 1000 frames.
Set inframe to 50 frames
movie plays from 50 frames in to the outframe, then loops back to frame 0 plays to the outframe, loops back to frame 0 and so on.

Also a playmode to ping pong between the inframe and the outframe would be good.

Thanks
Paul