HappyHorse-1-1 text-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 happyhorse-1-1/text-to-video. Default："happyhorse-1-1/text-to-video"。 Allowed values：happyhorse-1-1/text-to-video。 Example：happyhorse-1-1/text-to-video。
prompt	string	Yes	Prompt required by the ModelFold gateway; at most 2000 characters. Text description of the video to generate. Supports any language. Maximum 5,000 non-Chinese characters or 2,500 Chinese maxLength: 2000. Example：A dog running on the earth。
resolution	string	No	Output video resolution. Options: 720p; 1080p Default："1080p"。 Allowed values：720p / 1080p。 Example：1080p。
aspect_ratio	string	No	Output video aspect ratio. Options: 16:9; 9:16; 1:1; 4:3; 3:4; 4:5; 5:4; 9:21; 21:9 Default："16:9"。 Allowed values：16:9 / 9:16 / 1:1 / 4:3 / 3:4 / 4:5 / 5:4 / 9:21 / 21:9。 Example：16:9。
duration	number	No	Output video duration in seconds. Integer, 3–15. Default 5. Default：5。 minimum: 3. maximum: 15. Example：5。

Request Example

curl -X POST "https://modelfold.ai/v1/videos/generations" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "happyhorse-1-1/text-to-video",
  "prompt": "A dog running on the earth",
  "resolution": "1080p",
  "aspect_ratio": "16:9",
  "duration": 5
}'

{
  "model": "happyhorse-1-1/text-to-video",
  "prompt": "A dog running on the earth",
  "resolution": "1080p",
  "aspect_ratio": "16:9",
  "duration": 5
}

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": {}
}