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A person blows across the top of an empty glass bottle producing a low tone. Water is poured in partway and blowing again produces a clearly higher pitch.

C2-1-06 Event Transition · source_body principle: Vibrating Length -> Pitch (Mechanics)
Seedance 2.0ByteDance · proprietary
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Veo 3.1Google · proprietary
LTX-2.3Lightricks · open
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MagiHumanGAIR-NLP · open
Per-prompt rubric

Basic standards

Visual presence

  • a glass bottle
  • water
  • a person

Event: a person blows across the top of a glass bottle

Audio presence

  • a glass bottle

Sound: a blown bottle tone (a hollow breathy resonance from the bottle's cavity)

Key standards

Visual physical commonsense (V-PC)

  • The person blows the bottle while empty, then water is poured partway into the bottle, then the person blows the bottle again, in that order.

Audio physical commonsense (A-PC)

  • The second blown tone, after water is added, is noticeably higher in pitch than the first blown tone of the empty bottle.

Cross-modal physical commonsense (AV-PC)

  • Each blown tone aligns in time with a visible blow across the bottle's top.
  • The higher-pitched tone corresponds to the bottle with water added; the lower-pitched tone corresponds to the empty bottle.