| Prompt | string | Text prompt describing the video animation. Reference uploaded images using @image1, @image2, … @imageN (1-based, matching images_list order). To use a fictional character, reference it with @character:<id> (request_id from a completed Seedance 2 Character generation) — characters are automatically appended to images_list. Multiple characters are supported. Example: '@character:ab539e5f walks through a garden' or 'The cat in @image1 meets @character:ab539e5f'. | The lightbulb suddenly rockets across the room like a missile, smashing through curtains while water spins violently inside. The fish darts through swirling currents as the bulb ricochets off walls and finally bursts into floating droplets. |
| Resolution | Enum (2 options) | Output resolution. Price scales with resolution: 480p is cheaper than 720p. | 720p |
| Image URLs | array | Upload up to 9 image URLs. Reference them in the prompt using @image1, @image2, … @image9. The aspect ratio of the reference image takes precedence over the aspect_ratio parameter. | https://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/seedance-v2.0-i2v.jpg |