Bytedance - V1 Pro 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 to use for generation. Required field. - Must be bytedance/v1-pro-text-to-video for this endpoint Default："bytedance/v1-pro-text-to-video"。 Allowed values：bytedance/v1-pro-text-to-video。 Example：bytedance/v1-pro-text-to-video。
prompt	string	Yes	Prompt required by the ModelFold gateway; at most 2000 characters. The text prompt used to generate the video (Max length: 10000 characters) maxLength: 2000. Example：A boy with curly hair and a backpack rides a bike down a golden-lit rural road at sunset.<br>[Cut to] He slows down and looks toward a field of tall grass.<br>[Wide shot] His silhouette halts in the orange haze.。
aspect_ratio	string	No	The aspect ratio of the generated video Default："16:9"。 Allowed values：21:9 / 16:9 / 4:3 / 1:1 / 3:4 / 9:16。 Example：16:9。
resolution	string	No	Video resolution - 480p for faster generation, 720p for balance, 1080p for higher quality Default："720p"。 Allowed values：480p / 720p / 1080p。 Example：720p。
duration	string	No	Duration of the video in seconds Default："5"。 Allowed values：5 / 10。 Example：5。
camera_fixed	boolean	No	Whether to fix the camera position (Boolean value (true/false)) Example：false。
seed	number	No	Random seed to control video generation. Use -1 for random. (Min: -1, Max: 2147483647, Step: 1) (step: 1) Default：-1。 minimum: -1. maximum: 2147483647. Example：-1。
enable_safety_checker	boolean	No	The safety checker is always enabled in Playground. It can only be disabled by setting false through the API. (Boolean value (true/false)) Example：true。
nsfw_checker	boolean	No	Defaults to false. When false, no additional content filtering is applied and results are returned directly by the model.

Request Example

curl -X POST "https://modelfold.ai/v1/videos/generations" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "bytedance/v1-pro-text-to-video",
  "prompt": "A boy with curly hair and a backpack rides a bike down a golden-lit rural road at sunset.\n[Cut to] He slows down and looks toward a field of tall grass.\n[Wide shot] His silhouette halts in the orange haze.",
  "aspect_ratio": "16:9",
  "resolution": "720p",
  "duration": "5",
  "seed": -1
}'

{
  "model": "bytedance/v1-pro-text-to-video",
  "prompt": "A boy with curly hair and a backpack rides a bike down a golden-lit rural road at sunset.\n[Cut to] He slows down and looks toward a field of tall grass.\n[Wide shot] His silhouette halts in the orange haze.",
  "aspect_ratio": "16:9",
  "resolution": "720p",
  "duration": "5",
  "seed": -1
}

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": {}
}