Hop Hop Hop AI prompt (and when you don't need one)

Use it with two reference photos in an app that takes images:

Vertical 9:16 phone video, one fixed camera at chest height in a narrow light grey apartment hallway. Person A stands right at the lens on the right edge, large, grinning, then points back at person B, who stands far away at the end of the hallway, small, head to feet. Person B hops on the spot three times to the beat. Person A raises a flat palm so that, seen from the camera, it sits just above B's head, and presses down; B crouches lower and lower as if squished. Hard cut at 4.3 seconds: they have swapped places and it happens again. The hand never touches anyone.

• The palm drifting off the head, or growing and shrinking.
• The far person squatting before the palm comes down.
• Faces changing after the cut, or the two people blending.
• The hops landing off the beat.

The generator already has the hallway, the camera and every beat set up. You add the photos; there is nothing to write.