Video prompt: An exuberant flash mob dance transforming city streets with synchronized moves and energy, uniting casual passersby and planners in an exhilarating, rhythmic celebration of spontaneity.
Defect: Deformation (any reason involved with a movement)
Explanation: This group of people is dancing in the street, but their movements are highly mechanical and accompanied by unnatural horizontal shifts. Their hands appear extremely blurred, and both their hands and arms undergo significant and exaggerated shape deformation, creating a highly unrealistic visual effect.