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A large gong is struck and rings deep and loud. Then an assistant presses both palms flat against the surface and the ringing dies immediately.

C2-3-22 Event Transition · source_radiation principle: Resonance Damping (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 large gong
  • an assistant's palms

Event: an assistant presses both palms on a struck gong

Audio presence

  • a large gong

Sound: gong ring

Key standards

Visual physical commonsense (V-PC)

  • A large gong is visibly struck with a mallet during the clip.
  • An assistant's both palms visibly press flat against the gong surface while it is still ringing.

Audio physical commonsense (A-PC)

  • A deep loud ringing tone from the gong is audible after the mallet strike.
  • The ring dies almost instantly once both palms contact the gong, with no residual ring.

Cross-modal physical commonsense (AV-PC)

  • The ring onset in the audio aligns in time with the visible mallet strike.
  • The abrupt end of the ring coincides in time with the visible moment both palms contact the gong surface.