← all videos

A lighter is struck. The spark wheel produces a click, then the flame appears with a soft whoosh.

C1-3-35 Steady State · sound_persistence principle: Causal (Wave)
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 lighter

Event: a lighter is struck and ignites

Audio presence

  • a lighter

Sound: ['spark wheel click', 'flame whoosh']

Key standards

Visual physical commonsense (V-PC)

  • A hand turns the spark wheel of a visible lighter, and a flame appears after the wheel is turned.

Audio physical commonsense (A-PC)

  • A click sound in the audio has the metallic snap timbre of a flint spark wheel.
  • A whoosh sound in the audio has the soft character of a small gas flame igniting.

Cross-modal physical commonsense (AV-PC)

  • The click sound aligns in time with the visible turn of the spark wheel.
  • The whoosh sound aligns in time with the visible appearance of the flame.
  • The click sound occurs in the audio before the whoosh sound.