> ## 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.

# RunwayAleph2PromptImageNode - ComfyUI Built-in Node Documentation

> Complete documentation for the RunwayAleph2PromptImageNode node in ComfyUI. Learn its inputs, outputs, parameters and usage.

This node anchors a guidance image to a specific moment in the output video, controlling what the edited video looks like at that point. Connect this node to the `prompt_images` input of the Runway Aleph2 Video to Video node, and chain several together (up to 5) using the optional `prompt_images` input.

## Inputs

| Parameter       | Description                                                                                                                                                            | Data Type            | Required | Range                                             |
| --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------- | -------- | ------------------------------------------------- |
| `image`         | The guidance image to place at the chosen moment of the output video.                                                                                                  | IMAGE                | Yes      | -                                                 |
| `position`      | How to place this image on the output video's timeline. Choose between absolute timing (seconds from start) or fractional timing (percentage of video duration).       | COMBO                | Yes      | `Absolute (seconds)`<br />`Fraction (0.0 to 1.0)` |
| `prompt_images` | Optional earlier prompt images to chain with this one. Connect the output of another Runway Aleph2 Prompt Image node here to build a chain of up to 5 guidance images. | PROMPT\_IMAGE\_CHAIN | No       | -                                                 |

**Position Mode Details:**

When `position` is set to `Absolute (seconds)`, you must provide a `seconds` value (default: 0.0, range: 0.0 to 30.0, step: 0.1). This specifies the exact time in seconds from the start of the output video where this image applies.

When `position` is set to `Fraction (0.0 to 1.0)`, you must provide a `fraction` value (default: 0.0, range: 0.0 to 1.0, step: 0.01). This specifies where in the output video this image applies as a fraction of its total duration (0.0 = start, 1.0 = end).

## Outputs

| Output Name     | Description                                                                                                           | Data Type            |
| --------------- | --------------------------------------------------------------------------------------------------------------------- | -------------------- |
| `prompt_images` | A chain of prompt images that can be connected to the `prompt_images` input of the Runway Aleph2 Video to Video node. | PROMPT\_IMAGE\_CHAIN |

> 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/RunwayAleph2PromptImageNode/en.md)

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