How to Add Background Music with Claude
Add background music to videos using Claude and ToolRouter. Professional audio mixing with AI.
Tool
Claude manages audio mixing as a multi-step conversation in your terminal. Specify volume levels, ducking behavior, and fade parameters through natural dialogue, then refine the mix by adjusting specific moments that need attention. Claude handles the technical details of audio balancing while you focus on describing how the final mix should feel.
Connect ToolRouter to Claude
1Go to Settings → Connectors → Add custom connector
2Enter the details below and click Add
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Done — works on Claude chat, desktop, and mobile
Steps
Once connected (see setup above), use the Video Editor tool:
- Provide your video and audio: "Add this background track to my product demo video"
- Claude layers the music using edit_footage with auto-balanced levels
- Adjust the mix: "Lower the music volume during the speaking parts and add a fade-out at the end"
- Finalize: "Export the final video with finalize_video"
Example Prompt
Try this with Claude using the Video Editor tool
Add background music to my 3-minute product demo. Use the provided ambient track. Duck the music to 20% during voiceover sections and bring it to 80% during visual-only transitions. Fade in over 2 seconds, fade out over 3.
Tips
- Specify volume levels as percentages for precise control over the mix
- Ask Claude to auto-detect speech sections for intelligent music ducking
- Always add fade-in and fade-out to avoid abrupt music starts and stops