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A single candle burns with a tiny flame, nearly silent. The scene cuts to a large bonfire crackling loudly and throwing sparks.

C2-2-15 Event Transition · source_excitation principle: Sound Source Power Comparison (Mechanics)
Seedance 2.0ByteDance · proprietary
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Veo 3.1Google · proprietary
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JavisDiT++JavisDiT · open
MagiHumanGAIR-NLP · open
Per-prompt rubric

Basic standards

Visual presence

  • a candle
  • a bonfire

Event: a candle flame and a bonfire burn

Audio presence

  • a candle flame
  • a bonfire

Sound: a burning flame

Key standards

Visual physical commonsense (V-PC)

  • The clip shows both a small candle flame and, after a scene cut, a large bonfire, with each appearing as real combustion.

Audio physical commonsense (A-PC)

  • The bonfire crackling is noticeably louder than the near-silent candle flame.
  • The audio differs between the two scenes, with quiet for the candle and loud crackling for the bonfire.

Cross-modal physical commonsense (AV-PC)

  • The quiet near-silent audio aligns with the candle scene.
  • The loud crackling aligns with the bonfire scene.