POSTED BY CLIVE THOMPSON, AUGUST 24, 10:55 A.M. If you've watched the most recent summer and winter Olympics. you've probably seen the photo software that breaks Stro Motion an athletes fluid movements into stop-motion- style freeze-frames. This fascinating software is made by the Swiss company Dartfish. and apparently Olympians have been using it to train in an incredibly innovative way. They use film footage of the performance of a past Olympic athlete and display it alongside footage of themselves. Both sequences are broken down into StroMotion frames.