API reference · Alibaba

alibaba/wan/2.1/vace/long-reframe

Integrate this model through SandBase's unified API, with production-ready schemas and examples.

VIDEOAsyncOpen model

Production endpoint

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OpenAI-compatible endpoint with unified authentication and usage tracking.

POSThttps://api.sandbase.ai/v1/run

Model IDalibaba/wan/2.1/vace/long-reframe

Input Schema

9 parameters · 1 required · 8 optional

Parameter	Type	Required	Description
`prompt`	string	Required	The text prompt to guide video generation. Optional for reframing. · Default: ""
`seed`	integer	Optional	Random seed for reproducibility. If None, a random seed is chosen.
`video`	string	Optional	URL to the source video file. This video will be used as a reference for the reframe task.
`paste_back`	boolean	Optional	Whether to paste back the reframed scene to the original video. · Default: true
`resolution`	string	Optional	Resolution of the generated video. · Options: auto, 240p, 360p, 480p, 720p · Default: "auto" auto240p360p480p720p
`zoom_factor`	number	Optional	Zoom factor for the video. When this value is greater than 0, the video will be zoomed in by this factor (in relation to the canvas size,) cutting off the edges of the video. A value of 0 means no zoom. · Min: 0 · Max: 0.9 · Default: 0
`aspect_ratio`	string	Optional	The aspect ratio of the generated image. · Options: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16 21:916:93:24:35:41:14:53:42:39:16
`trim_borders`	boolean	Optional	Whether to trim borders from the video. · Default: true
`scene_threshold`	number	Optional	Threshold for scene detection sensitivity (0-100). Lower values detect more scenes. · Min: 0 · Max: 100 · Default: 30

Output Schema

Field	Type	Description
`id`	string	Unique identifier for the generation task
`status`	string	Task status: pending, running, completed, failed, timeout
`model`	string	Model used for the generation
`outputs`	array	Array of output items
`outputs[].url`	string	URL of the generated artifact
`outputs[].content_type`	string	MIME type (e.g. image/png, video/mp4)
`error`	object \| null	Error details if failed, null on success
`error.type`	string	Machine-readable error type code
`error.message`	string	Human-readable error description

Async Workflow

This model uses asynchronous execution. Submit a request and poll for the result.

Submit — POST to /v1/run, receive an id
Poll — GET /v1/run/{id} until status is completed, failed, or timeout
Retrieve — Read outputs from the completed response

Code Examples

Ready-to-run snippets

# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
  "model": "alibaba/wan/2.1/vace/long-reframe",
  "video": "https://static.sandbase.ai/examples/alibaba/wan/2.1/vace/long-reframe/input_video_0.mp4",
  "prompt": "a beautiful sunset over mountains",
  "paste_back": true,
  "resolution": "auto",
  "zoom_factor": 0,
  "trim_borders": true,
  "scene_threshold": 30
}'

# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
  -H "Authorization: Bearer YOUR_API_KEY"

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