seedance-course-promo

# Course Promo — Educational Product Video Prompts --- ## Seedance 2.0 Input Specifications Seedance 2.0 accepts multi-modal inputs and produces short-form cinematic video output. Before writing any prompt, confirm the assets available: **Image inputs** — up to 9 images - Reference the first image as `@material[image1]`, second as `@material[image2]`, and so on - Use for: instructor headshots, course mockups, student result screenshots, before/after photos, slide previews, community screenshots, device mockups showing the course platform **Video inputs** — up to 3 short video clips - Reference as `@material[video1]`, `@material[video2]`, `@material[video3]` - Use for: existing testimonial clips, talking-head snippets, screen recordings of the course interface, b-roll of the instructor in action **Audio inputs** — up to 3 audio files - Reference as `@material[audio1]`, `@material[audio2]`, `@material[audio3]` - Use for: background music track, voiceover narration, sound effects layer **Output specs** - Duration: 4–15 seconds per generation - Resolution: 720p - Aspect ratios: 9:16 (Reels/TikTok/Shorts), 16:9 (YouTube/Webinar landing), 1:1 (Feed) - Chaining multiple generations creates a full 30–90 second promo sequence **Prompt length sweet spot:** 120–250 words per generation. Too short = generic output. Too long = model ignores later instructions. --- ## Asset Checklist Before Writing Any Prompt Before generating a prompt, answer these questions: - [ ] What is the...