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

# Audio-to-Video

> Sync character lip movement and expressions to dialogue audio

Audio-to-Video models analyze dialogue audio and generate synchronized lip movements, facial expressions, and subtle head motions for characters. In Automat Studio, these models power the Dialogue and Lipsync workflow, automatically aligning character animation to voice performances.

<Note>
  These models are used in the Dialogue and Lipsync tab of Shot Studio to automatically sync character lip movements and expressions to dialogue audio.
</Note>

## When to Use

* **Automatic Lipsync** — Sync character mouths to dialogue without manual animation
* **Expression Matching** — Generate facial expressions that match dialogue emotion
* **Character Animation** — Add subtle head movements and reactions
* **Post-Production Sync** — Align existing character shots with dialogue tracks

## Recommended Models

These models consistently deliver the best results for lipsync:

### Sync Lipsync 2 Pro

* **Credits:** 84
* **Rating:** ⭐⭐⭐⭐ (4/5)
* **Provider:** fal.ai
* **Avg. Duration:** \~100 seconds
* **Best for:** Professional-quality lip synchronization (Default model)

### Sync React-1

* **Credits:** 166
* **Rating:** ⭐⭐⭐⭐ (4/5)
* **Provider:** fal.ai
* **Avg. Duration:** \~266 seconds
* **Best for:** Advanced reactive expressions and head movements

## Supported Models

These models are available but may have varying quality or processing times:

### Sync Lipsync 2.0

* **Credits:** 50
* **Rating:** ⭐⭐⭐ (3/5)
* **Provider:** fal.ai
* **Avg. Duration:** \~77 seconds
* **Use when:** Fast lipsync needed with good quality

### Kling Lipsync

* **Credits:** 28
* **Rating:** ⭐⭐ (2/5)
* **Provider:** fal.ai
* **Avg. Duration:** \~158 seconds
* **Use when:** Budget-friendly lipsync option

### LatentSync

* **Credits:** 40
* **Rating:** ⭐⭐ (2/5)
* **Provider:** fal.ai
* **Avg. Duration:** \~39 seconds
* **Use when:** Fast processing is priority

### PixVerse Lipsync

* **Credits:** 40
* **Rating:** ⭐⭐ (2/5)
* **Provider:** fal.ai
* **Avg. Duration:** \~48 seconds
* **Use when:** Experimenting with different lipsync approaches

### VEED

* **Credits:** 8
* **Rating:** ⭐ (1/5)
* **Provider:** fal.ai
* **Avg. Duration:** \~33 seconds
* **Use when:** Lowest cost option needed

## Tips for Best Results

1. **Clean Audio** — Use isolated dialogue without background music for best accuracy
2. **Tag Speakers** — Specify which character is speaking to improve sync accuracy
3. **Include Emotion Cues** — Mention the emotion or tone in prompts for better expression matching
4. **Preview Playback** — Review synced results against the waveform to confirm timing
5. **High Quality Source** — Clear, well-recorded dialogue produces better sync results
6. **Multiple Passes** — Adjust and regenerate if initial sync isn't perfect

> ⚠️ **Important:** High-quality, clean audio without background music leads to the most accurate lip sync results.

***

<CardGroup cols={2}>
  <Card title="Dialogue and Lipsync" icon="microphone" href="/tutorial/shot-studio/dialogue-lipsync">
    Learn how to sync dialogue to your shots
  </Card>

  <Card title="Shot Studio" icon="film" href="/tutorial/shot-studio/index">
    Complete guide to shot creation and enhancement
  </Card>
</CardGroup>