# Wan 2.2 Outpainting — API Reference

Model ID: `model_wan-2-2-vace-fun-a14b-outpainting`

---

## Authentication

- **API_KEY** and **API_SECRET** are found in your [Scenario Project Settings](https://app.scenario.com/team&tab=project_api_keys) under API Keys.
- Set them as environment variables `SCENARIO_SDK_API_KEY` and `SCENARIO_SDK_API_SECRET` — both SDKs pick them up by default.
- For raw HTTP (cURL), use Basic Auth: `Authorization: Basic base64("<API_KEY>:<API_SECRET>")`.

### Install the SDK

- JavaScript / TypeScript: `npm install @scenario-labs/sdk`
- Python: `pip install scenario-sdk`

---

## Generate

**Endpoint:** `POST https://api.cloud.scenario.com/v1/generate/custom/model_wan-2-2-vace-fun-a14b-outpainting`

### Parameters

| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| `prompt` | string | yes | - | Text prompt for video generation |
| `videoUrl` | assetId | yes | - | Input video for outpainting |
| `expandLeft` | boolean | - | `true` | Expand video to the left |
| `expandRight` | boolean | - | `true` | Expand video to the right |
| `expandTop` | boolean | - | `true` | Expand video to the top |
| `expandBottom` | boolean | - | `true` | Expand video to the bottom |
| `expandRatio` | number | - | `0.25` | Amount of expansion. This is a float value between 0 and 1, where 0.25 adds 25% to the original video size on the specified sides. |
| `negativePrompt` | string | - | - | Text negative prompt for video generation |
| `refImageUrls` | assetId[] | - | `` | Reference images |
| `matchInputNumFrames` | boolean | - | `false` | Match the number of frames from input video |
| `numFrames` | number | - | `81` | Number of frames to generate |
| `matchInputFramesPerSecond` | boolean | - | `false` | If true, the frames per second of the generated video will match the input video. If false, the frames per second will be determined by the Frames Per Seconds parameter. |
| `framesPerSecond` | number | - | `16` | Frames per second of the generated video. Ignored if match_input_frames_per_second is true. Default value: 16 |
| `resolution` | string | - | `720p` | Output video resolution |
| `aspectRatio` | string | - | `auto` | Aspect ratio for output video |
| `numInferenceSteps` | number | - | `30` | Number of inference steps |
| `guidanceScale` | number | - | `5` | Guidance scale for generation |
| `enablePromptExpansion` | boolean | - | `false` | Enable prompt expansion |
| `acceleration` | string | - | `regular` | Processing acceleration mode |
| `videoQuality` | string | - | `high` | Output video quality |
| `videoWriteMode` | string | - | `balanced` | Video writing mode |
| `numInterpolatedFrames` | number | - | `1` | Number of frames to interpolate between the original frames. A value of 0 means no interpolation |
| `interpolatorModel` | string | - | `film` | Interpolator model to use |
| `seed` | number | - | - | Random seed for reproducibility. If None, a random seed is chosen. |

### Example Requests

**cURL**

```bash
curl -X POST "https://api.cloud.scenario.com/v1/generate/custom/model_wan-2-2-vace-fun-a14b-outpainting" \
  -H "Authorization: Basic $(echo -n '<API_KEY>:<API_SECRET>' | base64)" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'EOF'
{
  "prompt": "A fantasy landscape",
  "videoUrl": "<asset_id>",
  "expandLeft": true,
  "expandRight": true,
  "expandTop": true,
  "expandBottom": true,
  "expandRatio": 0.25,
  "refImageUrls": [],
  "matchInputNumFrames": false,
  "numFrames": 81,
  "matchInputFramesPerSecond": false,
  "framesPerSecond": 16,
  "resolution": "720p",
  "aspectRatio": "auto",
  "numInferenceSteps": 30,
  "guidanceScale": 5,
  "enablePromptExpansion": false,
  "acceleration": "regular",
  "videoQuality": "high",
  "videoWriteMode": "balanced",
  "numInterpolatedFrames": 1,
  "interpolatorModel": "film"
}
EOF
```

**Python**

```python
import os
from scenario_sdk import Scenario

client = Scenario(
    api_key=os.environ.get("SCENARIO_SDK_API_KEY"),
    api_secret=os.environ.get("SCENARIO_SDK_API_SECRET"),
)

body = {
    "prompt": "A fantasy landscape",
    "videoUrl": "<asset_id>",
    "expandLeft": True,
    "expandRight": True,
    "expandTop": True,
    "expandBottom": True,
    "expandRatio": 0.25,
    "refImageUrls": [],
    "matchInputNumFrames": False,
    "numFrames": 81,
    "matchInputFramesPerSecond": False,
    "framesPerSecond": 16,
    "resolution": "720p",
    "aspectRatio": "auto",
    "numInferenceSteps": 30,
    "guidanceScale": 5,
    "enablePromptExpansion": False,
    "acceleration": "regular",
    "videoQuality": "high",
    "videoWriteMode": "balanced",
    "numInterpolatedFrames": 1,
    "interpolatorModel": "film"
}

response = client.generate.run_model(
    model_id="model_wan-2-2-vace-fun-a14b-outpainting",
    body=body,
)
print(response)
```

**JavaScript**

```javascript
import Scenario from "@scenario-labs/sdk";

const client = new Scenario({
  apiKey: process.env["SCENARIO_SDK_API_KEY"],
  apiSecret: process.env["SCENARIO_SDK_API_SECRET"],
});

const body = {
  "prompt": "A fantasy landscape",
  "videoUrl": "<asset_id>",
  "expandLeft": true,
  "expandRight": true,
  "expandTop": true,
  "expandBottom": true,
  "expandRatio": 0.25,
  "refImageUrls": [],
  "matchInputNumFrames": false,
  "numFrames": 81,
  "matchInputFramesPerSecond": false,
  "framesPerSecond": 16,
  "resolution": "720p",
  "aspectRatio": "auto",
  "numInferenceSteps": 30,
  "guidanceScale": 5,
  "enablePromptExpansion": false,
  "acceleration": "regular",
  "videoQuality": "high",
  "videoWriteMode": "balanced",
  "numInterpolatedFrames": 1,
  "interpolatorModel": "film"
};

const response = await client.generate.runModel("model_wan-2-2-vace-fun-a14b-outpainting", { body });
console.info(response);
```

---

## Retrieve Results

After submitting a generation request, you receive a `jobId`. Poll the job until `job.status` is `"success"`. The generated asset IDs are in `job.metadata.assetIds`.

**Endpoint:** `GET https://api.cloud.scenario.com/v1/jobs/{jobId}`

### Example Requests

**cURL**

```bash
curl -X GET "https://api.cloud.scenario.com/v1/jobs/<JOB_ID>" \
  -H "Authorization: Basic $(echo -n '<API_KEY>:<API_SECRET>' | base64)"
```

**Python**

```python
job = client.jobs.retrieve(job_id="<JOB_ID>")
print(job.status)
print(job.metadata.asset_ids)
```

**JavaScript**

```javascript
// Option 1 — wait on the response from runModel using the SDK helper
const completed = await response.job.wait();
console.info(completed.status);
console.info(completed.metadata?.assetIds);

// Option 2 — retrieve a job by its ID
const job = await client.jobs.retrieve("<JOB_ID>");
console.info(job.status);
console.info(job.metadata?.assetIds);
```

**Example response:**

```json
{
  "job": {
    "jobId": "job_abc123",
    "status": "success",
    "metadata": {
      "assetIds": [
        "asset_abc123"
      ]
    }
  }
}
```

> **Important:** Generated asset URLs are **temporary** and expire after a short period. Download and store any images you wish to keep before the URL expires. More info: [Content Delivery Network (CDN)](https://docs.scenario.com/get-started/documentation/content-delivery-network-cdn).

---

*Generated by [Scenario](https://app.scenario.com)*