Nice try but too many errors in the implementation; the asian girl with red shoes gets her elbow deformed by pixel repetition; also the going forwards and then backwards by every video block makes everyone look creepy, also there is a long pause to restart and the beginning/end does not match (this could be more of a Chrome issue).
It would have been better to use a "Fade In/Out" effect for lopping or move through the frames based on the absolute position of the mouse (or any other nice effect that doesn't require the videos to loop).