Extend Veo3.1 Video

video Veo3.1 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",
    "task_id": "\u2026"
  },
  "model": "veo3-extend-video"
}

Input parameters

Name	Type	Required	Description
`task_id`	string	required	The task ID of the original video generation. Must be a valid task ID returned by the video generation API. Note: Videos generated in 1080P cannot be extended.
`prompt`	string	required	A text prompt describing the content of the extended video. It should detail how you want the video to be extended, including actions, scene changes, styles, etc.
`seeds`	integer	optional	A random seed parameter that controls the randomness of the generated content. Range: 10000-99999. The same seed will generate similar video content, while different seeds will generate different video content. If not specified, the system will automatically assign a random seed.
`watermark`	string	optional	Watermark text (optional). If provided, a watermark will be added to the generated video.

Pricing

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