Wan 2.7 - Reference to Video

video Wan price on request

Request

POST https://app.video-blade.com/api/v1/generations
X-API-Key: vb_…
Content-Type: application/json

{
  "callback_url": "https://your-app.example/callbacks/video-blade",
  "input": {
    "prompt": "\u2026"
  },
  "model": "wan-2-7-r2v"
}

Input parameters

Name	Type	Required	Description
`prompt`	string	required	Text prompt. Required. Describes the desired elements and visual features in the generated video. Supports Chinese and English. Maximum length: 5000 characters.
`negative_prompt`	string	optional	Optional negative prompt describing what should not appear in the video. Supports Chinese and English. Maximum length: 500 characters.
`reference_image`	array	optional	Array of reference image URLs. At least one of `reference_image` or `reference_video` must be provided. The total number of images and videos cannot exceed 5.
`reference_video`	array	optional	Array of reference video URLs. At least one of `reference_image` or `reference_video` must be provided. The total number of images and videos cannot exceed 5.
`first_frame`	string	optional	First frame image URL. At most one image can be provided. If supplied, `aspect_ratio` is ignored and the output uses a ratio close to the first frame image.
`reference_voice`	string	optional	Audio URL used to specify the voice timbre of the subject in the reference material. Rules: - If `reference_video` contains audio and `reference_voice` is not provided, the original video audio is used by default - If both `reference_video` and `reference_voice` are provided, `reference_voice` takes priority Audio limits: - Formats: `wav`, `mp3` - Duration: `1` to `10` seconds - File size: up to `15MB`
`resolution`	string	optional	Output video resolution tier. Available values: `720p`, `1080p`. Default value: `1080p`. Values: `720p`, `1080p` Default: `1080p`
`aspect_ratio`	string	optional	Output video aspect ratio. Effective logic: - If `first_frame` is not provided: the video is generated using the specified `aspect_ratio` - If `first_frame` is provided: `aspect_ratio` is ignored and the output uses a ratio close to the first frame image Values: `16:9`, `9:16`, `1:1`, `4:3`, `3:4` Default: `16:9`
`duration`	integer	optional	Output video duration in seconds. Valid range is an integer from `2` to `10`. Default value: `5`. Default: `5`
`prompt_extend`	boolean	optional	Whether to enable prompt rewriting. When enabled, the model expands the input prompt. This usually works better for short prompts but increases processing time. Default: `True`
`watermark`	boolean	optional	Whether to add a watermark. The watermark is placed in the lower-right corner of the video with the fixed text "AI generated". Default: `False`
`seed`	integer	optional	Random seed. Range: `0-2147483647`. If omitted, the system generates one automatically.
`nsfw_checker`	boolean	optional	Defaults to false. You can set it to false based on your needs. If set to false, our content filtering will be disabled, and all results will be returned directly by the model itself. Note: There is no guarantee that everything can be filtered out; if you are not satisfied with the results, you will need to make your own arrangements.

Pricing

Price on request; the charge is settled from actual consumption with the video coefficient ×2.0. See Pricing & tokens.