Video prompt: A classic steam locomotive chugging through a picturesque autumn landscape, its plume of smoke rising into the crisp air as it travels back in time.
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 tree branches and leaves change shape rapidly as the camera moves, creating an unrealistic effect, as they should maintain a consistent structure regardless of camera motion.