Vidu Q4 Image To Video

Endpoint

POST /videos/generations

Full URL: https://modelfold.ai/v1/videos/generations

Authentication: every request must include the Authorization: Bearer <API_KEY> header.

Send model parameters directly in the JSON body. Do not wrap them in input. This request waits for generation to finish and returns data[].url; supported media models also offer async jobs, polling and callbacks. Replace example media URLs with your own publicly accessible files. See API gateway for billing and errors.

Input parameters for the generation task.

Request Parameters

Body (application/json)

Parameter	Type	Required	Description
model	string	Yes	The model name used for generation. This endpoint must use vidu-q4/image-to-video. Default："vidu-q4/image-to-video"。 Allowed values：vidu-q4/image-to-video。 Example：vidu-q4/image-to-video。
prompt	string	Yes	Prompt required by the ModelFold gateway; at most 2000 characters. Text description of the motion and scene. Optional. Up to 20,000 characters. maxLength: 2000.
duration	integer	No	Video length in seconds. Integer from 3 to 16. Default：5。 minimum: 3. maximum: 16. Example：5。
resolution	string	No	Output resolution. Default："720p"。 Allowed values：540p / 720p / 1080p / 2k / 4k。 Example：720p。
audio	boolean	No	Generate synchronized audio (dialogue and sound effects). Set false for a silent video. Default：true。 Example：true。
image_url	string	Yes	First-frame image URL (http/https). JPG, JPEG, PNG or WEBP, up to 50 MB. The video inherits this image's aspect ratio. minLength: 1. pattern: ^https?://.+.

Request Example

curl -X POST "https://modelfold.ai/v1/videos/generations" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "vidu-q4/image-to-video",
  "image_url": "https://example.com/reference.png",
  "prompt": "A paper boat drifting down a rainy street.",
  "duration": 5,
  "resolution": "720p",
  "audio": true
}'

{
  "model": "vidu-q4/image-to-video",
  "image_url": "https://example.com/reference.png",
  "prompt": "A paper boat drifting down a rainy street.",
  "duration": 5,
  "resolution": "720p",
  "audio": true
}

Response

200 — Generation completed. usage contains actual billing details; result URLs are illustrative.

{
  "ok": true,
  "created": 1792134000,
  "data": [
    {
      "url": "https://modelfold.ai/uploads/outputs/result.mp4"
    }
  ],
  "usage": {}
}