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A skateboard rolls from smooth concrete onto a rough sidewalk. The wheel noise grows louder, harsher, and rattlier.

C2-1-40 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 skateboard
  • smooth concrete
  • a rough sidewalk

Event: a skateboard rolls across a surface

Audio presence

  • skateboard wheels

Sound: wheel rolling noise

Key standards

Visual physical commonsense (V-PC)

  • A normally-shaped skateboard rolls continuously across a visible transition from smooth concrete to rough sidewalk, with appropriate visible vibration on the rough section.

Audio physical commonsense (A-PC)

  • The rough-sidewalk wheel noise is distinctly louder, harsher, and rattlier than the smooth-concrete wheel noise.

Cross-modal physical commonsense (AV-PC)

  • The wheel noise character changes at the moment the skateboard visibly crosses onto the rough sidewalk.
  • The quieter, smoother wheel noise corresponds to the skateboard rolling on smooth concrete.
  • The louder, harsher, rattlier wheel noise corresponds to the skateboard rolling on the rough sidewalk.