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A ball bounces inside a squash court with a lively ringing sound. The scene cuts to an outdoor tennis court, where a ball bounces with a much drier, duller thud.

C3-2-07 Environment Transition · enclosure_geometry principle: Open vs Enclosed (Wave)
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 ball
  • a squash court
  • a tennis court

Event: a ball bounces on a court

Audio presence

  • a ball

Sound: ball bounce

Key standards

Visual physical commonsense (V-PC)

  • A ball bounces inside a glass-walled squash court with plausible bouncing physics.
  • A ball bounces on an outdoor tennis court with plausible bouncing physics.

Audio physical commonsense (A-PC)

  • The squash-court bounce carries a lively ringing reverberation.
  • The outdoor tennis-court bounce is dry and dull with quick decay.

Cross-modal physical commonsense (AV-PC)

  • Each bounce sound aligns in time with the visible ball-court contact in its respective location.
  • The reverberation character of each bounce matches the visible court in which it occurs.