Seedance
Seedance-specific models, limits, and pricing notes for the shared AI Video generation endpoint.
Seedance runs on the shared video generation endpoint. For the endpoint, request flow, content items, polling, task listing, and error codes, see the AI Video overview. This page covers only what is specific to Seedance.
Models
| Model | Best for | Rate limit |
|---|---|---|
doubao-seedance-2-pro | Higher-quality Seedance generation | 5 RPM |
doubao-seedance-2-fast | Fast text/image/video generation | 5 RPM |
Pass the model in the model field of POST /v1/video-generation/generate. doubao-seedance-2-fast is the default model when model is omitted.
Limits
| Limit | doubao-seedance-2-pro | doubao-seedance-2-fast |
|---|---|---|
| Resolution | 480p, 720p, 1080p | 480p, 720p (no 1080p) |
| Duration | 4-15s | 4-15s |
| Aspect ratios | 16:9, 4:3, 1:1, 3:4, 9:16, 21:9 | same as pro |
| Prompt length | up to 500 characters | up to 500 characters |
inputVideoDuration | 2-15s (reference video input) | 2-15s (reference video input) |
doubao-seedance-2-fast does not support 1080p. Neither Seedance model
supports the 4:5 or 5:4 aspect ratios — those are HappyHorse-only. Seedance
text prompts are capped at 500 characters (the shared endpoint allows up to
2500, but Seedance models truncate beyond 500).
Pricing
Seedance pricing scales with resolution and duration; 1080p and longer clips cost more. Reference-video inputs are billed using inputVideoDuration. Call POST /v1/video-generation/estimate-credits with the Seedance model, resolution, duration, and (for video reference) hasVideoInput plus inputVideoDuration to get the exact credit cost before generating. Credits are charged on task creation and refunded automatically on failure.
Example
curl -X POST "https://api.marswave.ai/openapi/v1/video-generation/generate" \
-H "Authorization: Bearer $LISTENHUB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "doubao-seedance-2-pro",
"content": [
{ "type": "text", "text": "A cinematic aerial shot of a quiet coastal city at sunrise" }
],
"resolution": "1080p",
"ratio": "16:9",
"duration": 5,
"generateAudio": true
}'See the AI Video overview for the full parameter list and the image-to-video / video-reference request shapes.