> ## 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.

# LtxvApiTextToVideo - ComfyUI Built-in Node Documentation

> Complete documentation for the LtxvApiTextToVideo node in ComfyUI. Learn its inputs, outputs, parameters and usage.

> 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/LtxvApiTextToVideo/en.md)

The LTXV Text To Video node generates professional-quality videos from a text description. It connects to an external API to create videos with customizable duration, resolution, and frame rate. You can also choose to have AI-generated audio added to the video.

## Inputs

| Parameter        | Data Type | Required | Range                                                                    | Description                                                                                                    |
| ---------------- | --------- | -------- | ------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------- |
| `model`          | COMBO     | Yes      | `"LTX-2 (Fast)"`<br />`"LTX-2 (Quality)"`<br />`"LTX-2 (Turbo)"`         | The AI model to use for video generation. The available models are mapped from the source code's `MODELS_MAP`. |
| `prompt`         | STRING    | Yes      | -                                                                        | The text description that the AI will use to generate the video. This field supports multiple lines of text.   |
| `duration`       | COMBO     | Yes      | `6`<br />`8`<br />`10`<br />`12`<br />`14`<br />`16`<br />`18`<br />`20` | The length of the generated video in seconds (default: 8).                                                     |
| `resolution`     | COMBO     | Yes      | `"1920x1080"`<br />`"2560x1440"`<br />`"3840x2160"`                      | The pixel dimensions (width x height) of the output video.                                                     |
| `fps`            | COMBO     | Yes      | `25`<br />`50`                                                           | The frames per second for the video (default: 25).                                                             |
| `generate_audio` | BOOLEAN   | No       | -                                                                        | When enabled, the generated video will include AI-generated audio matching the scene (default: False).         |

**Important Constraints:**

* The `prompt` must be between 1 and 10,000 characters long.
* If you select a `duration` greater than 10 seconds, you must also use the `"LTX-2 (Fast)"` model, a resolution of `"1920x1080"`, and an `fps` of `25`. This combination is required for longer videos.

## Outputs

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