Wan 3.0 : Prompt vidéo en une prise, style cinématographique, train espace-temps

Duration: 30 seconds Aspect ratio: 16:9 horizontal Format: A truly continuous, no-cut, no-frame-skip, cinematic long take Overall style: Hollywood sci-fi adventure blockbuster, hyper-realistic, grand scale, real physics, cinematic lighting and depth of field, fine film grain, high dynamic range, gradual cold-warm color shifts. Subject: A modern, realistic city train with a huge curved panoramic glass window. The camera is at the rear of the carriage, shooting diagonally forward with a 24mm wide-angle: the left two-thirds is the panoramic window, the right one-third is handrails, hanging rings, and ordinary passengers. Passengers wear modern dark commuter clothing, initially quietly looking down at their phones. The train, carriage structure, seats, passenger positions, clothing, camera height, and focal length remain completely consistent for 30 seconds. All spacetime changes happen only outside the window. ONE CONTINUOUS TAKE (0-30s): 0-4s: The train speeds past the edge of a modern city on a cloudy day, with buildings, canals, and utility poles forming realistic lateral motion blur. The carriage lighting is stable, passengers look down at their phones. The camera maintains a diagonal wide-angle composition with only slight realistic train vibration. A calm female voice over the intercom: "The spacetime train is about to depart, please remain seated." 4-6s: The train enters a dim tunnel, the city is replaced by concrete walls, overhead lights sweep quickly across the glass. The carriage gradually darkens. The tunnel wall continuously turns into rough, damp natural rock, using rocks close to the glass for a natural occlusion transition, never cutting. 6-12s - Dinosaur Era: The rock cave suddenly opens, revealing sunlight through thin mist over a prehistoric rainforest and a vast Jurassic valley. Herds of stegosaurus run beside the train, a giant brachiosaurus slowly crosses the distant forest, pterosaurs soar across the sky. Foreground plants blur with fast motion, mid-ground dinosaurs are clear, distant volcanoes are veiled in mist, creating strong depth and parallax. At 10s, a massive Tyrannosaurus rex bursts from the forest, briefly runs parallel to the train, and roars close to the glass. Passengers simultaneously look up and turn toward the window, but without exaggerated panic. Golden sunlight and forest green realistically project into the carriage. 12-19s - Volcanic Apocalypse: The T-Rex's massive body sweeps past the camera, forming a natural occlusion. After the occlusion, the same prehistoric world has become a volcanic wasteland being destroyed. A supervolcano in the distance erupts violently, black volcanic clouds roll upward, red-hot lava cascades down cliffs, and cracks in the ground extend toward the train. The train speeds through a lava canyon, volcanic bombs streak across the sky but do not hit the carriage, a wave of scorching heat chases from behind. The glass reflects real firelight, the carriage shifts from golden to intense red-orange, passengers grip handrails, staring in shock. Maintain realistic gravity, dust, and volcanic debris motion. 19-22s - Spacetime Descent: The train plunges into a massive cloud wall of volcanic steam, thick smoke, and white vapor, the frame is naturally covered but the camera never cuts. Red firelight rapidly shifts to deep blue, steam condenses into water droplets streaking across the glass. The train seamlessly crosses a spacetime boundary into the deep sea; the carriage interior remains dry and intact, no seawater enters. 22-28s - Underwater World: White vapor dissipates, revealing a vast, clear, deep blue ocean outside the window. Sunlight beams pierce the surface, colorful corals, seaweed, schools of fish, sea turtles, and manta rays glide at different depths, creating spectacular parallax. A giant blue whale slowly swims above the train, its belly nearly covering the entire panoramic window, an extremely awe-inspiring scale. Cool blue wave light flows naturally over the carriage and passengers' faces, all passengers quietly gaze upward. 28-30s - Ultimate Reveal: The blue whale's tail sweeps past the glass for a final natural occlusion. After the tail leaves, a magnificent lost civilization spanning a deep-sea canyon suddenly appears outside the window: glowing crystal towers, giant domes, ancient temples, and floating tracks extending to the deep sea's end, countless manta rays weaving above the city. The train continues toward a bright spacetime portal at the city's center. The camera maintains the original composition inside the carriage, ending on the silhouettes of all passengers in awe, no fade-out, no cut. Camera: Throughout, a 24mm cinematic wide-angle at eye level, a fixed three-part composition from the rear of the carriage diagonally forward; a gimbal feel combined with slight train vibration; realistic depth of field, glass reflections, foreground motion blur, and multi-layer parallax. The camera never leaves the carriage, never changes axis, never suddenly pushes, pulls, rotates, or drifts. Sound: A continuous, unified train track sound as the audio anchor; tunnel echoes, dinosaur low-frequency footsteps and roars, volcanic explosions and lava rumbling, steam impact, a deep underwater ambience after entering the sea, whale calls. Sound transitions smoothly with scenes, cinematic surround, no background music, no extra dialogue. Continuity constraints: The same train, same carriage, same group of passengers, same clothing, same seat layout, same glass window structure, same camera position throughout the 30 seconds; scenes can only transition continuously via train movement, rock occlusion, smoke, steam, darkness, or large creatures passing by. The carriage does not deform, passengers do not teleport, and outside creatures never enter the carriage.