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

# LtxvApiImageToVideo - ComfyUI Built-in Node Documentation

> The LTXV Image To Video node generates a professional-quality video from a single starting image.

The LTXV Image To Video node generates a professional-quality video from a single starting image. It uses an external API to create a video sequence based on your text prompt, allowing you to customize the duration, resolution, and frame rate.

## Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `image` | First frame to be used for the video. | IMAGE | Yes | - |
| `model` | The AI model to use for video generation. The "Pro" model is optimized for quality, while the "Fast" model is optimized for speed. | COMBO | Yes | `"LTX-2 (Pro)"`<br />`"LTX-2 (Fast)"` |
| `prompt` | A text description that guides the content and motion of the generated video (default: empty). | STRING | Yes | - |
| `duration` | The length of the video in seconds (default: 8). | COMBO | Yes | `6`<br />`8`<br />`10`<br />`12`<br />`14`<br />`16`<br />`18`<br />`20` |
| `resolution` | The output resolution of the generated video. | COMBO | Yes | `"1920x1080"`<br />`"2560x1440"`<br />`"3840x2160"` |
| `fps` | The frames per second for the video (default: 25). | COMBO | Yes | `25`<br />`50` |
| `generate_audio` | When true, the generated video will include AI-generated audio matching the scene (default: False). | BOOLEAN | No | - |

**Important Constraints:**

* The `image` input must contain exactly one image.
* The `prompt` must be between 1 and 10,000 characters long.
* If you select a `duration` longer than 10 seconds, you must use the **"LTX-2 (Fast)"** model, a **"1920x1080"** resolution, and **25** FPS. This combination is required for longer videos.

**Note:** This node is marked as deprecated. The estimated cost displayed on the node depends on the selected `model`, `duration`, and `resolution`.

## Outputs

| Output Name | Description | Data Type |
| - | - | - |
| `video` | The generated video file. | 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/LtxvApiImageToVideo/en.md)

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