> ## 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.

# LTX Video Upscale - ComfyUI Built-in Node Documentation

> Upscales a video to 1080p, 4K or 8K, keeping its aspect ratio, frame rate and audio.

Upscales a video to 1080p, 4K or 8K, keeping its aspect ratio, frame rate and audio.

## Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `video` | Video to upscale, with a short side of at least 480 pixels and at most 7680x4320 in either orientation. Up to 2401 frames for 1080p, 601 frames for 4K and 241 frames for 8K. | VIDEO | Yes | - |
| `resolution` | Output size, as large as fits in 1920x1080, 3840x2160 or 7680x4320 and turned for portrait videos. Default: `"4k"`. | COMBO | Yes | `"1080p"` `"4k"` `"8k"` |
| `seed` | Controls whether the node re-runs; results are non-deterministic regardless of the seed. Default: 42. | INT | No | 0 to 4294967295 |

## Outputs

| Output Name | Description | Data Type |
| - | - | - |
| `video` | The upscaled video, with its audio kept. | 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/LtxApiVideoUpscale/en.md)

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