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A bicycle rolls from smooth pavement onto a wooden boardwalk. The tire noise turns from a quiet hiss into a hollow rhythmic rolling.

C2-1-35 Event Transition · source_body principle: Material Comparison (Material)
Seedance 2.0ByteDance · proprietary
Kling 3.0 OmniKuaishou · proprietary
Veo 3.1Google · proprietary
LTX-2.3Lightricks · open
Ovi 1.1character.ai · open
JavisDiT++JavisDiT · open
MagiHumanGAIR-NLP · open
Per-prompt rubric

Basic standards

Visual presence

  • a bicycle
  • pavement
  • a wooden boardwalk

Event: a bicycle rolls across a surface

Audio presence

  • bicycle tires

Sound: tire rolling noise

Key standards

Visual physical commonsense (V-PC)

  • The bicycle rolls continuously across a visible transition from smooth pavement to wooden boardwalk with a plausible rider motion.

Audio physical commonsense (A-PC)

  • The pavement rolling has a quiet hiss and the boardwalk rolling has a distinctly hollow rhythmic rolling timbre.

Cross-modal physical commonsense (AV-PC)

  • The tire noise character changes at the moment the bicycle visibly crosses onto the boardwalk.
  • The quiet hiss corresponds to the bicycle rolling on smooth pavement.
  • The hollow rhythmic rolling corresponds to the bicycle rolling on the wooden boardwalk.