The easiest way to do this is to use slides.
1. Make a series of slides
http://www.molsoft.com/gui/making-molecular-slides.html
2. You can include rocking http://www.molsoft.com/gui/graphics-effects.html#animate-view in the slide too
3. Then make a movie from your slides http://www.molsoft.com/gui/video.html#slide-movie