Video prompt: A group of children playfully run across a beach, kicking up sand as they chase after a colorful kite that dances and twirls in the breeze against a backdrop of crashing waves and a brilliant blue sky.
Defect: Deformation (when Object is involved in an act,  anything in this process that's weird. e.g. people walk into a wall. "Walk" is an act)
Explanation: The legs of the figure in red clothing appear to deform during the running motion, particularly when the legs overlap.