Supported Models and ParametersVideo Models
Seedance 2 Fast
Complete parameters, enums, and integration notes for seedance-2-fast.
seedance-2-fast is a speed-first video model with image, video, and audio reference inputs.
Quick Facts
| Item | Value |
|---|---|
| Model ID | seedance-2-fast |
| Type | Video |
| Region | Global / CN |
| Best For | speed-first |
| Priority | Choose for the matching speed/cost profile |
Recommended Request Shape
Submit to POST /v1/generations; duration is measured in seconds.
{"model":"seedance-2-fast","prompt":"A cinematic product reveal","aspect_ratio":"16:9","resolution":"720p","duration":5,"generate_audio":true}Field Reference
| Field | Type | Required | Default | Description |
|---|---|---|---|---|
model | string | Yes | - | Must be seedance-2-fast |
prompt | string | Yes | - | Video prompt |
reference_videos | string[] | No | - | Up to 3 reference videos |
input_video_duration | number | No | Output duration | Processed input-video seconds |
reference_images | string[] | No | - | Up to 9 reference images |
reference_audios | string[] | No | - | Up to 3 reference audios |
generate_audio | boolean | No | true | Whether to generate audio |
aspect_ratio | string | No | 16:9 | Output aspect ratio |
resolution | string | No | 720p | Output resolution |
duration | integer | No | 5 | Duration in seconds |
Supported Enums
| Field | Values |
|---|---|
aspect_ratio | 21:9 16:9 4:3 1:1 3:4 9:16 |
resolution | 480p 720p |
duration | 4 to 15 seconds |
Integration Notes
- Use array fields for reference media and provide
input_video_durationfor accurate quotes. generate_audiodefaults totrue; sendfalseexplicitly when audio is not needed.
Smallest Example
{"model":"seedance-2-fast","prompt":"A cinematic product reveal"}