# Grok Video Extend Node

The Grok Video Extend node uses an AI model to create a seamless continuation of an existing video. You provide a short video and a text prompt describing what should happen next, and the node generates a new video clip that follows on from the original.

## Inputs

| Parameter | Description | Data Type | Required | Range |
|-----------|-------------|-----------|----------|-------|
| `prompt` | Text description of what should happen next in the video. | STRING | Yes | N/A |
| `video` | Source video to extend. MP4 format, 2-15 seconds. | VIDEO | Yes | N/A |
| `model` | The model to use for video extension. When selected, it reveals a nested `duration` parameter. | COMBO | Yes | `"grok-imagine-video"` |
| `seed` | Seed to determine if node should re-run; actual results are nondeterministic regardless of seed (default: 0). | INT | No | 0 to 2147483647 |

**Parameter Constraints:**
*   The `video` input must be an MP4 file between 2 and 15 seconds in length and cannot exceed 50MB in file size.
*   The `prompt` must contain at least one character (whitespace is trimmed).
*   The `model` parameter is a dynamic combo. Selecting the "grok-imagine-video" option reveals a nested `duration` parameter, which controls the length of the extension in seconds (default: 8, range: 2 to 10).

## Outputs

| Output Name | Description | Data Type |
|-------------|-------------|-----------|
| `output` | The newly generated video extension. | VIDEO |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/GrokVideoExtendNode/en.md)

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