PixVerse V6 First & Last Frame Transition

This page is generated from the upstream official OpenAPI documentation. Endpoints, parameters and examples match the official docs; brand and API domain are replaced with ModelFold.

Endpoint

POST /jobs/createTask

Full URL: https://ai.modelfold.online/v1/jobs/createTask

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

Query Task Status

After submitting a task, you can check its progress and retrieve the result through the unified query endpoint:

• Get Task Details — Learn how to check task status and retrieve the generated result

TIP

In production, we recommend using the callBackUrl parameter to receive an automatic notification when generation is complete instead of polling the status endpoint.

TIP

Enabling audio costs more. For current prices, see ai.modelfold.online/pricing.

Related Resources

• Market Overview — Browse all available models
• Common API — View account credits and usage

Request Parameters

Body (application/json)

Parameter	Type	Required	Description
model	string	Yes	The name of the model used for the generation task. Required field. Default："pixverse-v6/transition"。 Allowed values：pixverse-v6/transition。 示例：pixverse-v6/transition。
callBackUrl	string	No	The callback URL to receive the completion notification of the generation task. Optional configuration, recommended for production environments. - After the task generation is completed, the system will push the task status and results to this URL via POST - The callback content includes the URL of the generated content and task-related information - Your callback interface must support receiving POST requests and JSON-formatted request bodies - You can also actively poll the task status by calling the task details interface 示例：https://your-domain.com/api/callback。
input	object	Yes	Input parameters for the generation task
input.prompt	string	Yes	Generate prompt, cannot be empty, length is limited to 3-5000 characters. 示例：A cinematic sunrise illuminates a mist-shrouded mountain lake; the camera slowly sweeps across the water's surface as a flock of birds flies overhead.。
input.first_frame_image_url	string	Yes	First frame image URL. Supports HTTP, HTTPS, and OSS addresses; supported image formats include JPG, JPEG, PNG, and WebP; the size of a single image file must not exceed 20 MB 示例：https://your-domain.com/images/first-frame.png。
input.last_frame_image_url	string	Yes	Last frame image URL. Supports HTTP, HTTPS, and OSS addresses; supported image formats include JPG, JPEG, PNG, and WebP; the size of a single image file must not exceed 20 MB 示例：https://your-domain.com/images/last-frame.png。
input.quality	string	Yes	Required. Output video resolution. Supports 360p, 540p, 720p, and 1080p. Allowed values：360p / 540p / 720p / 1080p。 示例：720p。
input.duration	integer	Yes	Required. Output video duration in seconds. PixVerse V6 supports 1–15 seconds. 示例：5。
input.generate_audio_switch	boolean	No	Whether to generate audio synchronized with the video content. Default：false。 示例：false。
input.seed	integer	No	Random seed, value range is 0–2147483647. Using the same parameters and seed helps improve result reproducibility. 示例：123456789。

Request Example

curl -X POST "https://ai.modelfold.online/v1/jobs/createTask" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "pixverse-v6/transition",
  "input": {
    "prompt": "Create a smooth transition from the first scene to the final scene",
    "first_frame_image_url": "https://example.com/first-frame.png",
    "last_frame_image_url": "https://example.com/last-frame.png",
    "duration": 5,
    "quality": "720p",
    "generate_audio_switch": false,
    "seed": 123456
  },
  "callBackUrl": "https://example.com/ModelFold/callback"
}'

{
  "model": "pixverse-v6/transition",
  "input": {
    "prompt": "Create a smooth transition from the first scene to the final scene",
    "first_frame_image_url": "https://example.com/first-frame.png",
    "last_frame_image_url": "https://example.com/last-frame.png",
    "duration": 5,
    "quality": "720p",
    "generate_audio_switch": false,
    "seed": 123456
  },
  "callBackUrl": "https://example.com/ModelFold/callback"
}

Response

200 — Request successful.

Callback

videoTaskCompleted

Callback URL: {request.body#/callBackUrl} (the callBackUrl in the request body).

The system sends this callback when the pixverse-v6/transition task succeeds or fails.

Callback body parameters

参数	类型	必填	说明
code	integer	是	Unified callback code: 200 for success, 501 for failure. Allowed values：200 / 501。 示例：200。
msg	string	是	Unified callback message. Allowed values：Playground task completed successfully. / Playground task failed.。 示例：Playground task completed successfully.。
data	object	是	—
data.taskId	string	是	The unique task identifier.
data.model	string	是	The model used for the task. Allowed values：pixverse-v6/transition。 示例：pixverse-v6/transition。
data.state	string	是	Terminal task state. Allowed values：success / fail。 示例：success。
data.param	string	是	JSON string containing the submitted task parameters.
data.resultJson	string	否	JSON string containing resultUrls, firstFrameUrl, lastFrameUrl, or resultObject when successful. Present only when state is success.
data.failCode	string	否	Failure code, a numeric string such as "400" or "500". Present only when state is fail.
data.failMsg	string	否	Failure reason. Present only when state is fail.
data.costTime	integer	否	Processing time in seconds. Present on both success and failure callbacks.
data.completeTime	integer	否	Task completion timestamp.
data.createTime	integer	否	Task creation timestamp.
data.updateTime	integer	否	Use completeTime as the completion time; updateTime may equal createTime.
data.creditsConsumed	number	否	Credits consumed by the task; 0 for failed tasks.

Task completed successfully

{
  "code": 200,
  "msg": "Playground task completed successfully.",
  "data": {
    "taskId": "task_example_video_webhook_001",
    "model": "pixverse-v6/transition",
    "state": "success",
    "param": "{\"input\":\"{}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"pixverse-v6/transition\"}",
    "resultJson": "{\"resultUrls\":[\"https://example.com/generated-video.mp4\"]}",
    "costTime": 12,
    "completeTime": 1234567890,
    "createTime": 1234560000,
    "updateTime": 1234567890,
    "creditsConsumed": 1.23
  }
}

Task failed

{
  "code": 501,
  "msg": "Playground task failed.",
  "data": {
    "taskId": "task_example_video_webhook_001",
    "model": "pixverse-v6/transition",
    "state": "fail",
    "param": "{\"input\":\"{}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"pixverse-v6/transition\"}",
    "failCode": "400",
    "failMsg": "<error detail>",
    "costTime": 12,
    "creditsConsumed": 0
  }
}