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A hanging light fixture swings gently. The faint creaking sound fades as the motion slows.

C1-3-04 Steady State · sound_persistence principle: Attenuation & Decay (Mechanics)
Seedance 2.0ByteDance · proprietary
Kling 3.0 OmniKuaishou · proprietary
Veo 3.1Google · proprietary
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JavisDiT++JavisDiT · open
MagiHumanGAIR-NLP · open
Per-prompt rubric

Basic standards

Visual presence

  • a hanging light fixture

Event: a hanging light fixture swings

Audio presence

  • a hanging light fixture

Sound: fixture creak

Key standards

Visual physical commonsense (V-PC)

  • The hanging light fixture swings with plausible pendulum motion, and the swing amplitude visibly decreases continuously over the clip.

Audio physical commonsense (A-PC)

  • The creaking sound fades in loudness as the clip progresses, ending noticeably softer than at the start.

Cross-modal physical commonsense (AV-PC)

  • Each creak sound aligns temporally with a visible swing motion of the fixture.