Wan - 2-6-flash-video-to-video

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.

Content generation using wan/2-6-flash-video-to-video

Overview

Generates a new video featuring the subject of the reference video(s); the scene is described by your prompt.

TIP

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

Query Task Status

After submitting a task, use the unified query endpoint to check progress and retrieve results:

• Get Task Details — Learn how to query task status and retrieve generation results

TIP

For production use, we recommend using the callBackUrl parameter to receive automatic notifications when generation completes, rather than polling the status endpoint.

Related Resources

• Market Overview — Explore all available models
• Common API — Check credits and account usage

Request Parameters

Body (application/json)

Parameter	Type	Required	Description
model	string	Yes	The model name to use for generation. Required field. - Must be wan/2-6-flash-video-to-video for this endpoint Default："wan/2-6-flash-video-to-video"。 Allowed values：wan/2-6-flash-video-to-video。 示例：wan/2-6-flash-video-to-video。
callBackUrl	string	No	The URL to receive generation task completion updates. Optional but recommended for production use. - System will POST task status and results to this URL when generation completes - Callback includes generated content URLs and task information - Your callback endpoint should accept POST requests with JSON payload containing results - Alternatively, use the Get Task Details endpoint to poll task status 示例：https://your-domain.com/api/callback。
input	object	No	Input parameters for the generation task
input.prompt	string	Yes	Text prompts for video generation. Supports Chinese and English, 2–1,500 characters. 示例：The video drinks milk tea while doing some improvised dance moves to the music.。
input.video_urls	array<string>	Yes	Reference video URLs. (File URL after upload, not file content; Accepted types: video/mp4, video/quicktime, video/x-matroska; Max size: 10.0MB)
input.duration	string	No	The duration of the generated video in seconds Default："5"。 Allowed values：5 / 10。 示例：5。
input.resolution	string	No	Video resolution tier Default："1080p"。 Allowed values：720p / 1080p。 示例：720p。
input.audio	boolean	No	Whether to generate video with audio. Audio directly affects the cost, as the pricing differs between videos with sound and silent videos. (Boolean value (true/false))
input.multi_shots	boolean	No	The multi shots parameter controls the shot composition style during AI video generation, determining whether the generated video is a single continuous shot or multiple shots with transitions. (Boolean value (true/false)) 示例：false。
input.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://ai.modelfold.online/v1/jobs/createTask" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "wan/2-6-flash-video-to-video",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "The video drinks milk tea while doing some improvised dance moves to the music.",
    "video_urls": [
      "https://static.aiquickdraw.com/tools/example/1765957777782_cNJpvhRx.mp4"
    ],
    "duration": "5",
    "resolution": "720p",
    "multi_shots": false,
    "nsfw_checker": false
  }
}'

{
  "model": "wan/2-6-flash-video-to-video",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "The video drinks milk tea while doing some improvised dance moves to the music.",
    "video_urls": [
      "https://static.aiquickdraw.com/tools/example/1765957777782_cNJpvhRx.mp4"
    ],
    "duration": "5",
    "resolution": "720p",
    "multi_shots": false,
    "nsfw_checker": false
  }
}

Response

200 — Request successful

参数	类型	必填	说明
data	object	否	—
data.taskId	string	否	Task ID, can be used with Get Task Details endpoint to query task status 示例：task_wan_1772011305756。

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_wan_1772011305756"
  }
}

500 — Server error.

Callback

videoTaskCompleted

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

The system sends this callback when the wan/2-6-flash-video-to-video 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：wan/2-6-flash-video-to-video。 示例：wan/2-6-flash-video-to-video。
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": "wan/2-6-flash-video-to-video",
    "state": "success",
    "param": "{\"input\":\"{\\\"prompt\\\":\\\"The video drinks milk tea while doing some improvised dance moves to the music.\\\",\\\"video_urls\\\":[],\\\"duration\\\":\\\"5\\\",\\\"resolution\\\":\\\"1080p\\\",\\\"multi_shots\\\":false,\\\"nsfw_checker\\\":false}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"wan/2-6-flash-video-to-video\"}",
    "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": "wan/2-6-flash-video-to-video",
    "state": "fail",
    "param": "{\"input\":\"{\\\"prompt\\\":\\\"The video drinks milk tea while doing some improvised dance moves to the music.\\\",\\\"video_urls\\\":[],\\\"duration\\\":\\\"5\\\",\\\"resolution\\\":\\\"1080p\\\",\\\"multi_shots\\\":false,\\\"nsfw_checker\\\":false}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"wan/2-6-flash-video-to-video\"}",
    "failCode": "400",
    "failMsg": "<error detail>",
    "costTime": 12,
    "creditsConsumed": 0
  }
}