Parameters
| Name | Description | Type | Required | Enums |
|---|---|---|---|---|
| prompt | Text describing the video to generate. Reference optional inputs with placeholders such as [Image 1] or [Audio 1] when applicable. Recommended prompt length: under 1000 words. Lengthy text will lead to scattered information, and the model may ignore details and only focus on key points, resulting in missing elements in the generated video. |
string | Yes | - |
| audio_urls | Optional. Up to 3 reference audio URLs (e.g., for rhythm or voice style). | string[] | No | - |
| camera_fixed | Whether to keep the camera fixed during generation. | boolean | No | true, false |
| duration | Video duration in seconds (4-15 seconds). | integer | No | 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 |
| execution_expires_after | Task expiration time in seconds. | integer | No | - |
| first_frame_image | Optional. URL or Base64 of the starting frame. Do not use together with reference_images in the same request. |
string | No | - |
| generate_audio | Whether to generate audio for the video. | boolean | No | true, false |
| last_frame_image | Optional. URL or Base64 of the ending frame. Do not use together with reference_images in the same request. |
string | No | - |
| ratio | Aspect ratio of the generated video. | string | No | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 |
| reference_images | Optional. Up to 9 reference images for style or subject guidance. Do not use together with first_frame_image or last_frame_image. |
string[] | No | - |
| resolution | Output resolution of the video. Fast variant does not support 1080p. | string | No | 480p, 720p |
| return_last_frame | Whether to return the last frame of the generated video. | boolean | No | true, false |
| seed | Random seed for reproducible generation. Use -1 for random. | integer | No | - |
Pricing
Unit: $/sec
| Dimension | Pricing |
|---|---|
| resolution: 480p | 0.0650 |
| resolution: 720p | 0.1400 |
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