> ## Documentation Index
> Fetch the complete documentation index at: https://carat.im/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Lip sync (talking video)

> Make a person's photo naturally speak in sync with audio.

A feature that combines audio with a person's image (or character) to create a 'talking video' where the person's lips naturally move in sync with the audio.

## Method 1: Image + Text

Carat AI automatically converts text to speech and completes the lip sync in one step.

<Steps>
  <Step title="Upload image">
    Upload (or generate) a person/character image.
  </Step>

  <Step title="Text request">
    Make your request in the Chat.

    ```text theme={null}
        Make this image say 'Hello'
    ```

    ```text theme={null}
        Make this photo read this script: (script content)
    ```
  </Step>
</Steps>

Carat AI automatically generates the voice (TTS) and creates a video with lip sync applied to the image.

## Method 2: Image + Audio file

Use this when you already have a recorded audio file (MP3, WAV, etc.).

<Steps>
  <Step title="Upload image">
    Upload (or generate) a person/character image.
  </Step>

  <Step title="Upload audio file">
    Upload the audio file you want to use.
  </Step>

  <Step title="Request lip sync">
    Make your request in the Chat.

    ```text theme={null}
        Lip sync this image with the audio I just uploaded
    ```
  </Step>
</Steps>

<Info>
  **Cost-saving tip**

  Lip sync is a feature that uses a lot of Usage (credits). To save costs, you can first generate a "video of talking lip movements (without sound)", then use the [Add audio to video](/en/features/video/add-audio-to-video) feature to add narration audio separately.
</Info>