> ## 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.

# KlingOmniProFirstLastFrameNode - ComfyUI Built-in Node Documentation

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

> 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/KlingOmniProFirstLastFrameNode/en.md)

This node uses the latest Kling AI model to generate a video from a start frame, an optional end frame, or reference images. It can create a single video or a multi-shot storyboard with individual prompts and durations for each segment. The node processes these inputs to produce a video of a specified length and resolution, with optional audio generation.

## Inputs

| Parameter          | Data Type      | Required | Range                                                                                                                                                 | Description                                                                                                                                                                        |
| ------------------ | -------------- | -------- | ----------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `model_name`       | COMBO          | Yes      | `"kling-v3-omni"`<br />`"kling-video-o1"`                                                                                                             | The specific Kling AI model to use for video generation.                                                                                                                           |
| `prompt`           | STRING         | Yes      | -                                                                                                                                                     | A text prompt describing the video content. This can include both positive and negative descriptions. Ignored when storyboards are enabled.                                        |
| `duration`         | INT            | Yes      | 3 to 15                                                                                                                                               | The desired length of the generated video in seconds (default: 5).                                                                                                                 |
| `first_frame`      | IMAGE          | Yes      | -                                                                                                                                                     | The starting image for the video sequence.                                                                                                                                         |
| `end_frame`        | IMAGE          | No       | -                                                                                                                                                     | An optional end frame for the video. This cannot be used simultaneously with `reference_images`. Does not work with storyboards.                                                   |
| `reference_images` | IMAGE          | No       | -                                                                                                                                                     | Up to 6 additional reference images.                                                                                                                                               |
| `resolution`       | COMBO          | No       | `"4k"`<br />`"1080p"`<br />`"720p"`                                                                                                                   | The output resolution for the generated video (default: "1080p").                                                                                                                  |
| `storyboards`      | DYNAMIC\_COMBO | No       | `"disabled"`<br />`"1 storyboard"`<br />`"2 storyboards"`<br />`"3 storyboards"`<br />`"4 storyboards"`<br />`"5 storyboards"`<br />`"6 storyboards"` | Generate a series of video segments with individual prompts and durations. Only supported for `kling-v3-omni`. When enabled, each storyboard requires a prompt and duration input. |
| `generate_audio`   | BOOLEAN        | No       | True / False                                                                                                                                          | Generate audio for the video (default: False). Only supported for `kling-v3-omni`.                                                                                                 |
| `seed`             | INT            | No       | 0 to 2147483647                                                                                                                                       | Seed controls whether the node should re-run; results are non-deterministic regardless of seed (default: 0).                                                                       |

**Important Constraints:**

* The `end_frame` input cannot be used at the same time as the `reference_images` input.
* The `end_frame` input cannot be used simultaneously with storyboards.
* The `kling-video-o1` model does not support durations greater than 10 seconds, audio generation, 4k resolution, or storyboards.
* If you do not provide an `end_frame` or any `reference_images` with the `kling-video-o1` model, the `duration` can only be set to 5 or 10 seconds.
* All input images (`first_frame`, `end_frame`, and any `reference_images`) must have a minimum dimension of 300 pixels in both width and height.
* The aspect ratio of all input images must be between 1:2.5 and 2.5:1.
* A maximum of 6 images can be provided via the `reference_images` input.
* The `prompt` text must be between 1 and 2500 characters in length (0 characters allowed when storyboards are enabled).
* When storyboards are enabled, the total duration of all storyboard segments must equal the global `duration` value.
* Each storyboard prompt must be between 1 and 512 characters in length.

## Outputs

| Output Name | Data Type | Description               |
| ----------- | --------- | ------------------------- |
| `output`    | VIDEO     | The generated video file. |

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