> ## Documentation Index
> Fetch the complete documentation index at: https://comfyuiwiki.com/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). Selecting an option reveals the corresponding sub-parameter. | 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:**

* **Absolute (seconds):** When selected, you must provide a `seconds` value (default: 0.0, range: 0.0 to 30.0, step: 0.1). This specifies the time in seconds from the start of the output video where this image applies.
* **Fraction (0.0 to 1.0):** When selected, you must provide a `fraction` value (default: 0.0, range: 0.0 to 1.0, step: 0.01). This specifies the point in the output video 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. Chaining multiple prompt image nodes builds a sequence of up to 5 guidance images. | 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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