ok i got it. frame 0. key at 0 degrees frame middle + 1 frame. key at 180 degrees frame middle. observe difference from frame middle +1. frame end. key at 0 degrees minus difference observed above. make sure auto is off and animation is enabled(RDS.) if rotates wrong way use -180 and 0 degrees + difference. i tried the above and it works. durn avi seems to delight in delaying between loops. anyone know how to correct this?