> ## 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.

# KlingLipSyncTextToVideoNode - ComfyUI Built-in Node Documentation

> Complete documentation for the KlingLipSyncTextToVideoNode 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/KlingLipSyncTextToVideoNode/en.md)

Kling Lip Sync Text to Video Node synchronizes mouth movements in a video file to match a text prompt. It takes an input video and generates a new video where the character's lip movements are aligned with the provided text. The node uses voice synthesis to create natural-looking speech synchronization.

## Inputs

| Parameter     | Data Type | Required | Range                                                                                                                                                                                                                                                               | Description                                                                                                     |
| ------------- | --------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- |
| `video`       | VIDEO     | Yes      | -                                                                                                                                                                                                                                                                   | Input video file for lip synchronization                                                                        |
| `text`        | STRING    | Yes      | -                                                                                                                                                                                                                                                                   | Text Content for Lip-Sync Video Generation. Required when mode is text2video. Maximum length is 120 characters. |
| `voice`       | COMBO     | No       | "Melody"<br />"Bella"<br />"Aria"<br />"Ethan"<br />"Ryan"<br />"Dorothy"<br />"Nathan"<br />"Lily"<br />"Aaron"<br />"Emma"<br />"Grace"<br />"Henry"<br />"Isabella"<br />"James"<br />"Katherine"<br />"Liam"<br />"Mia"<br />"Noah"<br />"Olivia"<br />"Sophia" | Voice selection for the lip-sync audio (default: "Melody")                                                      |
| `voice_speed` | FLOAT     | No       | 0.8-2.0                                                                                                                                                                                                                                                             | Speech Rate. Valid range: 0.8\~2.0, accurate to one decimal place. (default: 1)                                 |

**Video Requirements:**

* Video file should not be larger than 100MB
* Height/width should be between 720px and 1920px
* Duration should be between 2s and 10s

## Outputs

| Output Name | Data Type | Description                                  |
| ----------- | --------- | -------------------------------------------- |
| `output`    | VIDEO     | Generated video with lip-synchronized audio  |
| `video_id`  | STRING    | Unique identifier for the generated video    |
| `duration`  | STRING    | Duration information for the generated video |