All processing stays local
Audio mixing runs entirely in your browser. No files are uploaded to any server.
Local video editing • No upload • Works in your browser
Add Background Music to Video
Add background music to your video locally in the browser and balance soundtrack and original audio with separate volume controls.
What this video soundtrack tool does
This tool lets you add a background music track to your video directly in your browser. You can balance the soundtrack volume against the original audio using separate volume controls, creating a mixed output without uploading files to a server.
How to add background music to a video
- 1.Upload your video file — MP4, WebM, MOV, or MKV
- 2.Choose an audio file for the background music
- 3.Adjust volume levels for both tracks and start mixing
- 4.Download the video with the added soundtrack
Why use this soundtrack tool
Separate volume controls
Balance the background music and original audio independently for the right mix.
Simple workflow
Upload video, choose music, adjust volumes, and download — just a few steps.
Common formats supported
Works with standard video and audio formats for everyday editing needs.
Video soundtrack FAQ
Are my files uploaded during mixing?
No. Audio mixing runs locally in your browser, so your video and audio files stay on your device.
Which video and audio formats are supported?
The tool supports common video formats like MP4, WebM, MOV, and MKV, and accepts audio files for the background track.
Can I control the volume of each track?
Yes. You get separate volume controls for the background music and the original video audio, letting you balance the mix.
Does adding a soundtrack affect video quality?
The tool mixes audio tracks without re-encoding the video. Output quality depends on the browser-side processing.