> ## 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.

# SFX (Sound Effects)

> Design soundscapes that match your shot

The SFX tab automatically generates sound effects and ambient audio that sync to the visual action in your shots. AI analyzes your video footage and creates matching sound effects, environmental audio, and foley sounds without requiring manual sound design.

<Note>
  **Plan availability:** SFX (Sound Effects) is available on the Hollywood plan. [Upgrade your plan](https://www.automatstudio.com/subscriptions) to unlock SFX features.
</Note>

## Workflow

1. Ensure you have an active video generation selected (the SFX tab will use the current active video)
2. Optionally enter a **description** to guide the SFX generation (e.g., "subtle ambient sounds," "dramatic impact sounds," "urban street noise")
3. Select different models if available — Different models may produce different styles of sound effects
4. Click **Generate SFX** and wait for processing to complete (typically 15-30 seconds)
5. Review the generated audio — Listen to ensure it matches the visual action
6. Adjust and regenerate if needed — Try different descriptions or models to refine the sound design

<Note>
  SFX generation uses video-to-audio models that analyze your video and automatically generate matching sound effects. See the [Video-to-Audio models guide](/models/video-to-audio) for details on available models and their capabilities.
</Note>

<Note>
  You can always replace or layer additional audio tracks later if you need to make adjustments or add director-requested changes.
</Note>

## Example SFX Descriptions

Here are examples of effective SFX descriptions to guide generation:

* **Ambient sounds:** "subtle ambient room tone," "forest atmosphere," "urban street ambience"
* **Action-focused:** "dramatic impact sounds," "quick footsteps on concrete," "door slam and echo"
* **Environmental:** "wind rustling leaves," "distant traffic," "ocean waves on shore"
* **Foley effects:** "footsteps on gravel," "paper rustling," "metal clinking"
* **Atmospheric:** "tension-building ambient," "mysterious background sounds," "energetic soundscape"

## Tips for Best Results

1. **Use Active Video** — Make sure the video generation you want SFX for is currently active/selected
2. **Be Descriptive** — Include specific details about the type of sounds you want (ambient, action, environmental)
3. **Try Different Models** — Experiment with different models to find the best sound style for your shot
4. **Review Carefully** — Listen to generated SFX to ensure it matches the visual timing and mood

> 💡 **Tip:** Start with a general description, then refine with more specific details if the initial generation isn't quite right. You can always regenerate with different prompts.

***

<CardGroup cols={2}>
  <Card title="VFX (Visual Effects)" icon="arrow-left" href="vfx-visual-effects">
    Previous: add visual effects
  </Card>

  <Card title="Share and Export" icon="share" href="../share-and-export">
    Next: share and export your project
  </Card>
</CardGroup>

***

<CardGroup cols={2}>
  <Card title="Video-to-Audio Models" icon="waveform" href="/models/video-to-audio">
    Learn about available SFX generation models
  </Card>
</CardGroup>