> ## 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.

# Wan3ImageToVideoApi - ComfyUI Built-in Node Documentation

> This node generates a video from a first-frame image using the Wan 3.0 model.

This node generates a video from a first-frame image using the Wan 3.0 model. You can optionally provide a last-frame image to control how the video ends; the model then creates a video that transitions from the first frame to the last frame.

## Inputs

### Common Inputs

| Parameter     | Description                                                                                                                                 | Data Type      | Required | Range                                    |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | -------------- | -------- | ---------------------------------------- |
| `model`       | Selects the Wan 3.0 model variant to use and determines which model-specific settings are shown below.                                      | DYNAMIC\_COMBO | Yes      | "wan3.0-video"<br />"wan3.0-video-prime" |
| `first_frame` | First frame image. Exactly one image is required.                                                                                           | IMAGE          | Yes      | Single image                             |
| `last_frame`  | Last frame image. The model generates a video transitioning from first to last frame. Optional; if provided, exactly one image is required. | IMAGE          | No       | Single image                             |
| `seed`        | Seed to use for generation (default: 42).                                                                                                   | INT            | Yes      | 0 - 2147483647                           |
| `watermark`   | Whether to add an AI-generated watermark to the result (default: false).                                                                    | BOOLEAN        | Yes      | true<br />false                          |

### wan3.0-video and wan3.0-video-prime Inputs

These model-specific settings are shared by both model options and appear when a model is selected.

| Parameter       | Description                                                                                                           | Data Type | Required | Range                                                               |
| --------------- | --------------------------------------------------------------------------------------------------------------------- | --------- | -------- | ------------------------------------------------------------------- |
| `prompt`        | Prompt describing the elements and visual features. Supports English and Chinese. Can be left empty (default: empty). | STRING    | Yes      | Up to 20000 characters                                              |
| `resolution`    | Resolution of the output video.                                                                                       | COMBO     | Yes      | "1080P"<br />"720P"<br />"480P"                                     |
| `ratio`         | Aspect ratio of the output video. With "adaptive", the output dimensions are derived from the first frame.            | COMBO     | Yes      | "adaptive"<br />"16:9"<br />"9:16"<br />"1:1"<br />"4:3"<br />"3:4" |
| `duration`      | Output duration in seconds. With "auto", the model chooses a duration that fits the prompt.                           | COMBO     | Yes      | "auto"<br />"2" - "30"                                              |
| `audio`         | Whether the output video contains an audio track (default: true).                                                     | BOOLEAN   | Yes      | true<br />false                                                     |
| `prompt_extend` | Whether to enhance the prompt with AI assistance (default: true).                                                     | BOOLEAN   | Yes      | true<br />false                                                     |

Note: The node accepts exactly one `first_frame` image and optionally one `last_frame` image. If more than one image is connected to either input, an error is raised. When `last_frame` is provided, the generated video transitions from the first frame to the last frame. The `prompt` is limited to 20,000 characters.

## Outputs

| Output Name | Description                                                                      | Data Type |
| ----------- | -------------------------------------------------------------------------------- | --------- |
| `video`     | The generated video. Contains an audio track when the `audio` option is enabled. | 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/Wan3ImageToVideoApi/en.md)

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