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A wooden stick sweeps sideways through tall grass. The blades brush against each other in continuous layered rustling.

C1-1-36 Steady State · source_material principle: Natural Material Sounds (Material)
Seedance 2.0ByteDance · proprietary
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Veo 3.1Google · proprietary
LTX-2.3Lightricks · open
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JavisDiT++JavisDiT · open
MagiHumanGAIR-NLP · open
Per-prompt rubric

Basic standards

Visual presence

  • a wooden stick
  • tall grass

Event: a stick sweeps through tall grass

Audio presence

  • tall grass

Sound: grass rustling

Key standards

Visual physical commonsense (V-PC)

  • The grass blades part and sway in response to the stick sweeping through them, with the grass clearly tall and the stick maintaining a consistent rigid shape.

Audio physical commonsense (A-PC)

  • The rustling is a continuous, layered, natural timbre consistent with many flexible grass blades brushing against each other.

Cross-modal physical commonsense (AV-PC)

  • The rustling is continuously present while the stick is visibly moving through the grass.