Video prompt: In a lively concert hall, a conductor passionately leads an orchestra through an energetic symphony. The musicians move in unison, bows slicing through air and trumpets reaching a crescendo, while the audience sits spellbound.
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: 
Carefully observe the musician's instrument; you can see it becomes distorted with changes in frame rate.