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A child pops a balloon at a birthday party. Nearby guests jump at the sharp pop. The scene cuts to the other end of the large hall, where the same pop sounds like a faint distant snap.

C3-1-07 Environment Transition · propagation_medium principle: Inverse square law (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 child
  • a balloon
  • guests
  • a hall

Event: a child pops a balloon in a hall

Audio presence

  • a balloon

Sound: a balloon pop

Key standards

Visual physical commonsense (V-PC)

  • A near-scene shows a child popping a balloon at a birthday party, and a far-scene from the opposite end of the same hall is also shown.

Audio physical commonsense (A-PC)

  • A balloon-pop sound is heard in both scenes, and the far-scene pop is noticeably quieter and thinner than the near-scene pop.

Cross-modal physical commonsense (AV-PC)

  • Each pop sound aligns in time with the visible balloon-popping moment in its scene.