> ## 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.

# RunwayAleph2VideoToVideoNode - ComfyUI Built-in Node Documentation

> Complete documentation for the RunwayAleph2VideoToVideoNode node in ComfyUI. Learn its inputs, outputs, parameters and usage.

This node edits a video using a text prompt with Runway's Aleph2 model. It transforms your footage by restyling, relighting, adding or removing elements, or changing the viewpoint while preserving the original motion and timing. The output resolution matches the input video.

## Inputs

| Parameter                 | Description                                                                                                                       | Data Type     | Required | Range                             |
| ------------------------- | --------------------------------------------------------------------------------------------------------------------------------- | ------------- | -------- | --------------------------------- |
| `prompt`                  | Describes what should appear in the output (1-1000 characters).                                                                   | STRING        | Yes      | 1-1000 characters                 |
| `video`                   | Input video to edit. Must be 2-30 seconds at 30 fps or lower.                                                                     | VIDEO         | Yes      | 2-30 seconds duration, 30 fps max |
| `seed`                    | Random seed for generation (default: 0).                                                                                          | INT           | Yes      | 0 to 4294967295                   |
| `public_figure_threshold` | Content moderation for recognizable public figures (default: "low").                                                              | COMBO         | Yes      | "auto"<br />"low"                 |
| `keyframes`               | Guidance images anchored to the input video, from Aleph2 Keyframe nodes (up to 5). Use keyframes or prompt images, not both.      | KEYFRAME      | No       | Up to 5 items                     |
| `prompt_images`           | Guidance images anchored to the output video, from Aleph2 Prompt Image nodes (up to 5). Use keyframes or prompt images, not both. | PROMPT\_IMAGE | No       | Up to 5 items                     |

**Important constraints:**

* The input video must be between 2 and 30 seconds long and have a frame rate of 30 fps or lower.
* You can use either `keyframes` or `prompt_images` for guidance, but not both at the same time.
* Each guidance input (keyframes or prompt images) supports a maximum of 5 items.
* Keyframe timestamps and prompt image timestamps must not exceed the input video duration.

## Outputs

| Output Name | Description                                     | Data Type |
| ----------- | ----------------------------------------------- | --------- |
| `video`     | The edited video generated by the Aleph2 model. | 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/RunwayAleph2VideoToVideoNode/en.md)

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