Prompt video
Create a finished 16:9 cinematic video, a short clip long, in which an old dark green American school bus transforms into a predatory mechanical creature on an abandoned wet road inside a dense pine forest at blue hour. Begin with the bus still intact in a quiet wide establishing shot. Its warm cabin lights and headlamps glow through cool mist. Move closer as metal panels tremble, the front grille splits into a jaw lined with uneven steel teeth, and mechanical joints unfold from beneath the chassis.
Show the completed creature lowering onto six heavy articulated legs, lifting its body, and taking several slow weighty steps. Alternate a low side tracking view of pistons and feet striking the road, a frontal wide view of the creature advancing, and a final extreme close view inside the illuminated mechanical mouth. Preserve the same faded green paint, rectangular school bus windows, amber roof lights, and weathered body across every stage of the transformation. Briefly reveal one adult driver in dark clothing bracing inside the open front doorway as the transformation reaches full scale.
Use photoreal visual effects, cold blue forest ambience, drifting fog, damp asphalt reflections, restrained camera shake, deep cinematic contrast, and orange practical light inside the bus. Sound should include distant wind in trees, stressed metal, hydraulic movement, heavy footfalls, and a low engine growl. No dialogue, captions, logos, gore, extra vehicles, daylight, or abrupt unexplained design changes. Output one playable finished video.