> ## Documentation Index
> Fetch the complete documentation index at: https://docs.toapis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Grok Imagine Video Extend (공식 채널)

> Extend generated Grok Imagine videos via the official channel

> [!NOTE]
>
> **중국 본토 사용자 안내:** 중국 본토 사용자는 `https://toapis.cn` 를 API 엔드포인트(Base URL)로 사용해 주세요. 본 문서의 예시에서 `https://toapis.com` 을 `https://toapis.cn` 로 바꿔 주세요.

* Official-channel Grok Imagine video extend feature
* Extend the duration of existing videos by 2-10 seconds
* Async task management, query results via task ID

## Path Parameters

**video\_id** `string` *required*

Original video task ID

This is the task ID returned from a previous video generation request. The finished video of that task is used as the extension source.

To extend an arbitrary video URL without a source task, use `POST /v1/videos/extend` and pass `video_urls` in the body instead of a path parameter.

## Authorizations

**Authorization** `string` *required*

All API requests require Bearer Token authentication

Get API Key: Visit the [API Key Management Page](https://toapis.com/console/token) to obtain your API Key

Add to request headers:

```
Authorization: Bearer YOUR_API_KEY
```

## Body

**model** `string` *required* (default: grok-imagine-video-official)

Video extend model name

Example: `"grok-imagine-video-official"`

**prompt** `string` *required*

Text description for video extension

**duration** `integer` (default: 6)

Extension length in seconds

Supported range: `2`–`10` seconds

**video\_urls** `string[]`

Source video URL list. Required when using `POST /v1/videos/extend` without a task ID; optional when `video_id` is present in the path.

Public `http://`/`https://` URLs.

> [!NOTE]
>
> **Pricing note**: Extension bills the generated extension seconds plus the **input source video duration** per second. The input video duration is determined automatically by the platform; it does not need to be declared in the request.

## Response

**id** `string`

Unique task identifier for querying task status

**object** `string`

Object type, always `generation.task`

**model** `string`

Model name used

**status** `string`

Task status

* `queued` - Waiting to be processed
* `in_progress` - Processing
* `completed` - Successfully completed
* `failed` - Failed

**progress** `integer`

Task progress percentage (0-100)

**created\_at** `integer`

Task creation timestamp (Unix timestamp)

**metadata** `object`

Task metadata

```bash cURL (Extend from task) theme={null}
curl --request POST \
  --url https://toapis.com/v1/videos/tsk_vid_01M59KNFZA2N4QFP0TMGACYH98/extend \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "grok-imagine-video-official",
    "prompt": "Continue the scene, make the dog run towards the horizon",
    "duration": 6
  }'
```

```bash cURL (Extend from URL) theme={null}
curl --request POST \
  --url https://toapis.com/v1/videos/extend \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "grok-imagine-video-official",
    "prompt": "Continue the scene, make the dog run towards the horizon",
    "duration": 6,
    "video_urls": ["https://example.com/source-video.mp4"]
  }'
```

```python Python theme={null}
import requests

video_id = "tsk_vid_01M59KNFZA2N4QFP0TMGACYH98"

response = requests.post(
    f"https://toapis.com/v1/videos/{video_id}/extend",
    headers={
        "Authorization": "Bearer your-ToAPIs-key",
        "Content-Type": "application/json"
    },
    json={
        "model": "grok-imagine-video-official",
        "prompt": "Continue the scene, make the dog run towards the horizon",
        "duration": 6
    }
)

task = response.json()
print(f"Task ID: {task['id']}")
print(f"Status: {task['status']}")
```

```javascript JavaScript theme={null}
const videoId = 'tsk_vid_01M59KNFZA2N4QFP0TMGACYH98';

const response = await fetch(`https://toapis.com/v1/videos/${videoId}/extend`, {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer your-ToAPIs-key',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    model: 'grok-imagine-video-official',
    prompt: 'Continue the scene, make the dog run towards the horizon',
    duration: 6
  })
});

const task = await response.json();
console.log(`Task ID: ${task.id}`);
console.log(`Status: ${task.status}`);
```

```json 200 theme={null}
{
  "id": "tsk_vid_01M59KTYQS81W0QENN56SEJ85S",
  "object": "generation.task",
  "model": "grok-imagine-video-official",
  "status": "queued",
  "progress": 0,
  "created_at": 1768380224,
  "metadata": {}
}
```


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