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A loud alarm clock rings sharply on a nightstand. A hand reaches over and switches it off, instantly silencing the noise.

C2-2-21 Event Transition · source_excitation principle: Noise Control at Source (Material)
Seedance 2.0ByteDance · proprietary
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Veo 3.1Google · proprietary
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MagiHumanGAIR-NLP · open
Per-prompt rubric

Basic standards

Visual presence

  • an alarm clock
  • a nightstand
  • a hand

Event: a hand switches off an alarm clock on a nightstand

Audio presence

  • an alarm clock

Sound: an alarm clock ringing

Key standards

Visual physical commonsense (V-PC)

  • A hand presses the off switch on a visible alarm clock that is ringing on a nightstand.

Audio physical commonsense (A-PC)

  • The alarm clock's ringing is loud and continuous up to the moment of the off-switch press.
  • The ringing stops abruptly at the off-switch press with no residual ring afterwards.

Cross-modal physical commonsense (AV-PC)

  • The cessation of the alarm ringing aligns precisely with the visible off-switch press.