To make a seamlessly looping video it helps to delete the first or last frame. To accomplish that, one may calculate the time it takes for 1 frame and then remove that time from the time range entered when setting up the movie export parameters. I use the attached spread sheet to assist in that time range calculation.
I wonder often if I am missing the check box that says "Generate loopable format" on the UI somewhere? It would automatically set the time range to delete the first or last frame from the timeline. I suppose one would have the option of which, but it really doesn't matter since the first and last frame should be identical in the motion study for this to work.
I really like the PW360 integration and the dual screen monitor support! Having jumped from SW10 to SW12, I'm rather dazzled.