The video is free to use, but you must cite this paper:
’t Hart, B.M. & Einhäuser, W. (2012). Mind the step: complementary effects of an implicit task on eye and head movements in real-life gaze allocation. Exp Brain Res, 223: 233.
There are several different formats with the same video. For use in PowerPoint the H264 version might be best.
The video show...