---
title: ToolRouter — Agent Use Case Guide
description: Step-by-step guide for completing a task with a specific AI agent using ToolRouter.
url: https://toolrouter.com/tools/audio-dubber/use-cases/replace-product-demo-voiceover/claude
---
# How to Replace Product Demo Voiceover with Claude

Claude makes voiceover replacement an iterative terminal workflow. Provide the demo video and updated script, and Claude walks you through voice style options, pacing adjustments, and timing alignment. Ask follow-up questions like "can the new voice match the screen transitions better?" and Claude refines the narration to sync perfectly with the visual content.

## Setup

claude mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter: claude mcp add toolrouter -- npx -y toolrouter-mcp
2. Ask Claude: "Replace the voiceover on this product demo with a new narration in English" and provide the video
3. Claude uses dub_audio to generate the replacement voiceover
4. Review the result and ask for tone adjustments if needed
5. Ask Claude to create versions in additional languages for international demos

## Example Prompt

```
Our product demo is outdated. Replace the voiceover with an updated script that covers our new features. Keep the same professional tone.
```

## Tips

- Provide the updated script text for more accurate results
- Ask Claude to match the pacing of the original narration
- Use this workflow every time you ship a major product update
