Sora提示词：Style: Realistic CCTV

Style: Realistic CCTV / surveillance footage
Camera: Fixed elevator lobby surveillance camera, slightly high angle
Lens: Mild fisheye distortion
Image Quality: Low bitrate, compression artifacts
Overlay: Timestamp + camera ID
Environment: Residential building elevator lobby
Lighting: Flat indoor lighting
Audio: Ambient indoor sound + elevator sound
NO subtitles

PROMPT（整段复制）

A static surveillance camera records the elevator lobby of a residential building in China.

SLOW / WEAK（先让人信）

An elderly man walks slowly toward the elevator.

For several seconds, he barely moves forward.

His steps are small and dragging.
His shoulders are slightly slumped.
One hand lightly touches the wall for balance.

He appears tired and physically weak.

Trigger Appears

The elevator doors begin to close slowly.

A clear elevator warning sound (“ding…”) is heard.

FAST / STRONG（本能爆发）

The elderly man suddenly accelerates.

He takes several fast, powerful steps,
moves straight toward the elevator,
and slips inside just before the doors close.

His movement is much quicker and more decisive than before.

The elevator doors close.

The camera remains completely still.

Only ambient sound remains.

Hard cut to black.