> ## 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.

# EmptyARVideoLatent - ComfyUI Built-in Node Documentation

> Complete documentation for the EmptyARVideoLatent 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/EmptyARVideoLatent/en.md)

## Overview

The EmptyARVideoLatent node creates a blank, empty latent representation for video generation. It is used to initialize a video generation process by providing a tensor of zeros with the specified dimensions, aspect ratio, and length.

## Inputs

| Parameter    | Data Type | Required | Range                 | Description                                                     |
| ------------ | --------- | -------- | --------------------- | --------------------------------------------------------------- |
| `width`      | INT       | Yes      | 16 to 8192 (step: 16) | The width of the video frames in pixels (default: 832)          |
| `height`     | INT       | Yes      | 16 to 8192 (step: 16) | The height of the video frames in pixels (default: 480)         |
| `length`     | INT       | Yes      | 1 to 1024 (step: 4)   | The number of frames in the video (default: 81)                 |
| `batch_size` | INT       | Yes      | 1 to 64               | The number of videos to generate in a single batch (default: 1) |

## Outputs

| Output Name | Data Type | Description                                                                                                                                                                                                                                       |
| ----------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `LATENT`    | LATENT    | A latent tensor filled with zeros, representing an empty video latent space with the specified dimensions, length, and batch size. The tensor shape is \[batch\_size, 16, lat\_t, height/8, width/8], where lat\_t is calculated from the length. |

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