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POST
  • Alibaba Cloud Wanxiang Flash (accelerated) video generation model
  • Supports two modes: Image-to-Video and Reference Video (r2v)
  • Text-only generation is not supported — you must provide an image or reference video URLs
  • Supports 720p/1080p resolution; audio on/off option affects billing
  • Faster generation speed — ideal for quick previews and iteration
Image or reference video URL is required: You must provide either image_urls (image-to-video) or metadata.reference_urls (reference video). Sending a prompt-only request will return an error.

Routing Logic

The server automatically selects the upstream model based on your request parameters:

Authentication

string
required
All endpoints require Bearer Token authenticationGet your API Key from the API Key Management PageAdd to request header:

Request Parameters

string
required
Video generation model name, fixed as wan2.6-flash
string[]
Reference image URL array for image-to-video mode (only supports 1 image)Required if metadata.reference_urls is not provided⚠️ URL format only (base64 no longer supported)
  • Publicly accessible image URL (http:// or https://)
  • You can use the Upload Image API to upload local images and get URLs
Example: ["https://example.com/image.jpg"]
string
Video content description (optional)Describe the expected motion or style to guide the modelExample: "The person comes alive and smiles at the camera"
string
default:"1080p"
Video resolutionAvailable values:
  • 720p - Standard definition
  • 1080p - High definition (default)
Default: 1080pDifferent resolutions have different prices — refer to the model marketplace for details.
integer
default:"5"
Video duration (seconds)Supported values: 5, 10, 15Default: 5
boolean
default:"true"
Whether to generate audio in the video
  • true - Generate video with audio (default)
  • false - Generate silent video
⚠️ Audio and silent videos are billed at different rates — choose accordinglyDefault: true
boolean
Add an Alibaba Cloud watermark to the generated video
object
Extended parameters

Audio vs Silent Pricing

Response

string
Unique task identifier for status queries
string
Object type, always generation.task
string
Model name used
string
Task status
  • queued - Queued for processing
  • in_progress - Processing
  • completed - Successfully completed
  • failed - Failed
integer
Task progress percentage (0-100)
integer
Task creation timestamp (Unix timestamp)
object
Task metadata

Usage Scenarios

Scenario 1: Image-to-Video (with audio)

Scenario 2: Image-to-Video (silent, lower cost)

Scenario 3: Reference Video (r2v-flash)

Querying Task ResultsVideo generation is an asynchronous task. After submission, a task_id is returned. Use the Get Video Task Status interface to query generation progress and results.