You can spin only one video, or grab a folder FULL of different videos (or the same SPUN videos multiple times) and just mass spin them. It does one spin every second or so. As you can see, it can also add a watermark which is pretty fucking cool. You can either use the little built in watermark maker that just adds whatever text you want, or you can design a clean one in Photoshop and import it. You can change the placement of the watermark in each corner, etc. It's a great tool.