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

# 对口型

> AI 驱动的视频语音同步

# Lip Sync

Synchronize lip movements to audio using AI. Create realistic talking head videos from a photo and audio file.

**Credit Cost:** 4-8 credits (duration-dependent)\
**Speed:** 2-5 minutes\
**Max Duration:** Matches audio length

***

## 使用方法

<Steps>
  <Step title="Go to Lip Sync">
    Navigate to [app.wrldwide.ai/lipsync](https://app.wrldwide.ai/lipsync)
  </Step>

  <Step title="Upload Photo">
    Upload a clear portrait photo:

    * Front-facing works best
    * Good lighting
    * Face clearly visible
  </Step>

  <Step title="Upload Audio">
    Upload audio file:

    * Supported: MP3, WAV, M4A
    * Clear speech audio
    * Max duration: varies by plan
  </Step>

  <Step title="Generate">
    Click **Generate** and wait 2-5 minutes
  </Step>

  <Step title="Download">
    Download your lip-synced video
  </Step>
</Steps>

***

## 使用场景

### UGC-Style Videos

Create authentic-looking user-generated content:

* Product testimonials
* Review videos
* Social proof content

### Avatar Videos

Generate spokesperson videos:

* Marketing messages
* Announcements
* Explainer videos

### Content Localization

* Sync translated audio to original visuals
* Create multi-language content
* Scale video production

***

## 最佳实践

### Photo Selection

* High-resolution portrait
* Front-facing or slight angle
* Good, even lighting
* Clear view of mouth and face
* Neutral background preferred

### Audio Tips

* Clear speech (no background noise)
* Consistent volume
* Proper pronunciation
* Match language to face (or expect accent)

***

## 提示

<Tip>
  **UGC Style:** Use casual photos and natural audio for authentic user-generated content look.
</Tip>

<Tip>
  **Multiple Languages:** Create same video in multiple languages by swapping audio files.
</Tip>

***

## 下一步

<CardGroup cols={2}>
  <Card title="Live Avatar" icon="user" href="/cn/features/live-avatar">
    Real-time talking avatars
  </Card>

  <Card title="UGC Video Ads" icon="video" href="/cn/features/ugc-video-ads">
    Create UGC-style video content
  </Card>
</CardGroup>