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# EmptyHunyuanVideo15Latent - ComfyUI Built-in Node Documentation

> Complete documentation for the EmptyHunyuanVideo15Latent 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/EmptyHunyuanVideo15Latent/en.md)

This node creates an empty latent tensor specifically formatted for use with the HunyuanVideo 1.5 model. It generates a blank starting point for video generation by allocating a tensor of zeros with the correct channel count and spatial dimensions for the model's latent space.

## Inputs

| Parameter    | Data Type | Required | Range | Description                                                      |
| ------------ | --------- | -------- | ----- | ---------------------------------------------------------------- |
| `width`      | INT       | Yes      | -     | The width of the video frame in pixels.                          |
| `height`     | INT       | Yes      | -     | The height of the video frame in pixels.                         |
| `length`     | INT       | Yes      | -     | The number of frames in the video sequence.                      |
| `batch_size` | INT       | No       | -     | The number of video samples to generate in a batch (default: 1). |

**Note:** The spatial dimensions of the generated latent tensor are calculated by dividing the input `width` and `height` by 16. The temporal dimension (frames) is calculated as `((length - 1) // 4) + 1`.

## Outputs

| Output Name | Data Type | Description                                                                                                                                                  |
| ----------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `samples`   | LATENT    | An empty latent tensor with dimensions suitable for the HunyuanVideo 1.5 model. The tensor has a shape of `[batch_size, 32, frames, height//16, width//16]`. |