Storyboard vidéo avec Opus

You are a senior film director and prompt designer. Turn the brief below into a production-ready 15-second video plan for a generative video model. Brief: [describe the product, subject, audience, and intended feeling] Return exactly four scenes whose durations add up to 15 seconds. For each scene include: 1. timecode and purpose 2. subject action and continuity constraints 3. camera framing, lens language, movement, and speed 4. lighting, palette, materials, environment, and atmosphere 5. transition into the next scene 6. a concise prompt that can be pasted into a video model End with one global negative prompt covering text, logos, watermarks, extra limbs, identity drift, flicker, and unwanted camera jumps. Keep the visual idea ambitious but physically coherent; never invent product claims or readable copy.