Movie.roll
From PyMOLWiki
Overview
This function will perform a movie roll--a 360 rotation of the camera about the scene--from the start frame to the end frame specified. So, if you specify fewer frames it'll roll faster than in you specified more frames.
Syntax
# roll the scene from state 'first' to 'last' rolling over axis 'axis' and looping (1) or not (0). movie.roll [first=1 [, last=-1 [, loop=1 [, axis='y' ]]]] # roll the scene over states 1 through 50. movie.roll 1, 50
