← all videos

A coin spins on a stone countertop, its ringing hum rising in pitch and growing louder before abruptly stopping as the coin falls flat.

C1-3-05 Steady State · sound_persistence principle: Attenuation & Decay (Mechanics)
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 coin
  • a stone countertop

Event: a coin spins on a stone countertop

Audio presence

  • a coin

Sound: coin spin hum

Key standards

Visual physical commonsense (V-PC)

  • The coin spins with visible wobble that flattens toward horizontal as the spin progresses and ends lying flat against the surface.

Audio physical commonsense (A-PC)

  • The ringing hum rises in pitch and grows louder during the spin, then ends abruptly as the coin falls flat.
  • The sound is a ringing metallic coin hum.

Cross-modal physical commonsense (AV-PC)

  • The abrupt end of the hum aligns temporally with the coin visibly falling flat against the surface.