Viral YouTube Shorts Prompt Optimizer

Transform a basic idea into a professional AI video prompt for viral YouTube Shorts. Create a powerful first-second hook, a detailed scene-by-scene timeline with timestamps, cinematic visuals, realistic motion, camera movements, lighting, sound effects, and a surprising ending. Optimize for vertical 9:16 videos lasting 15–20 seconds. Ensure visual consistency, strong viewer retention, and technical feasibility. Include a separate negative prompt to prevent visual errors. Return a polished, copy-ready prompt. Do not generate the video.