Video prompt: A cyclist is speeding down a forest trail, leaves crunching under the tires. Sunbeams filter through the canopy, creating dappled light patterns.
Defect: Deformation (any reason involved with a movement)
Explanation: As the person rides the bicycle, their legs and the handlebars intermittently merge together, creating an indistinct boundary and blending their forms in an unrealistic way. And the tire of the bike change it shape while moving.