Use the extracted final frame as the exact first frame. Create one continuous 4-s...

Use the extracted final frame as the exact first frame. Create one continuous 4-second vertical 9:16 shot with a locked camera. 0–1 s: Still leaning forward, the mother looks through her glasses toward the sofa offscreen right. She blinks once, relaxes her shoulders, and presses her lips together as she realizes she imagined the snake. 1–2 s: She gives one short, mildly annoyed flick of her r...