ZIP Effect

Keep the exact same person, their pose, motion, hands, timing, camera framing and camera movement EXACTLY as in the source video — frame for frame. Do NOT re-animate or re-time anything; this is a visual add-on only. As the hand grips the arm and pulls downward, a real zipper appears set into the skin along the [forearm], and it unzips open in perfect sync with the hand's motion — the seam splitting wider as the hand travels down the arm. From the opening, a continuous stream of glossy glass marbles pours OUT: round, colorful, catching the light, tumbling and bouncing off the arm and scattering across the surface below with natural weight and physics. The marbles keep flowing for as long as the zip stays open. Keep the rest of the arm, the hand, the person's face, hair, clothing, the background and the lighting all consistent with the original and unchanged. Photorealistic, tactile, high detail. Quick Dials What pours out: swap glossy glass marbles for gold coins, candy, ball bearings, even water. Zip placement: name it in the pull line — down the forearm, across the chest, down the shin. Spill volume: a light trickle vs a heavy, endless torrent.