Extend AI Video

video Runway 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",
    "quality": "\u2026",
    "task_id": "\u2026"
  },
  "model": "runway-extend-ai-video"
}

Input parameters

Name	Type	Required	Description
`task_id`	string	required	Unique identifier of the original video generation task. Must be a valid task ID from a previously generated video.
`prompt`	string	required	Descriptive text that guides the continuation of the video. Explain what actions, movements, or developments should happen next. Be specific but maintain consistency with the original video content.
`quality`	string	required	Video resolution, optional values are 720p or 1080p.
`watermark`	string	optional	Video watermark text content. An empty string indicates no watermark, while a non-empty string will display the specified text as a watermark in the bottom right corner of the video.

Pricing

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