Use a motion reference
A generic description of hopping may make a different dance. This effect uses the hallway clip, its pointing, hopping and crouching, and the cut that exchanges the performers.
Track people, not screen positions
Example: Replace only the black-coated person initially in front with the adult in the portrait. Track that same person after the cut places them at the back. Keep the original partner, hallway, timing and camera.
Check identity throughout
Inspect the opening, the cut and the final shot for blended faces, reversion to a source identity, extra limbs and unnatural perspective. Use sharp, unobstructed faces. Full-body photos help describe clothing.
No prompt to paste here
This tool includes its own fixed motion reference and editing instructions. Add your adult portrait. Inspect the preview and approve before generating. Two-photo, twin, pet and custom-choreography versions are not offered.