Seedance 2.0 橡皮筋动态循环 定格动画提示词

Create a 15-second ultra-wide cinematic (19:6 aspect ratio) hyper-realistic stop-motion style video with precise mechanical motion, designed for a panoramic storytelling experience. Scene opens on a long minimalist white desk stretching horizontally across the frame under soft natural daylight. The composition is extremely wide, with strong negative space on both sides. In the center lies a single stretched rubber band anchored between two small metal pins. The environment is clean, quiet, and highly detailed with subtle dust floating in sideways light rays. At 3 seconds, a metal ball bearing drops from above and lands inside the rubber band slightly off-center. The impact causes a visible elastic ripple that travels horizontally along the band. The motion spreads laterally across the frame, emphasizing the wide composition. At 6 seconds, multiple small objects begin entering from both left and right edges of the frame in a synchronized rhythm: paper clips slide in from the left, tiny magnets glide in from the right, and micro metal cubes drop gently into the system. Each object interacts with the rubber band differently, creating tension, bounce, and magnetic pull. The system begins expanding horizontally across the entire frame. At 9 seconds, the rubber band network evolves into a complex kinetic structure spanning almost the full width of the scene. Geometric formations emerge horizontally: triangles linking left to right, hexagonal chains stretching across the desk, and spiral patterns forming in the center. The camera performs a slow lateral tracking shot, following the motion across the wide frame. At 12 seconds, the system becomes a fully synchronized floating kinetic sculpture spanning edge-to-edge. Objects orbit smoothly in coordinated horizontal motion, forming a living mechanical rhythm. The lighting becomes slightly more dramatic with soft contrast and reflective highlights traveling across metallic surfaces. At 15 seconds, all motion collapses simultaneously toward the center and resets instantly into the original single rubber band stretched between two pins, restoring the minimal composition. Perfect seamless loop. Use ultra-wide cinematic framing (19:6), macro-level detail, shallow depth of field, and smooth slow-motion physics. Emphasize horizontal movement, spatial rhythm, and edge-to-edge composition. Lighting should remain soft natural daylight with subtle dynamic reflections during transformation. Sound design includes directional object drops, elastic tension sweeps across stereo field, magnetic clicks moving left-to-right, soft mechanical hum expanding across space, and a clean spatial silence at reset for loop perfection. Ensure strong lateral visual storytelling, satisfying physics, and a perfectly seamless loop designed for ultra-wide cinematic viewing.