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Add Audio to Video
Replace or add a new audio track to your video with volume control. Perfect for adding background music or voiceovers.
What this tool does
Add Audio to Video helps you replace or add a new audio track to your video with volume control. Perfect for adding background music or voiceovers.
What you get
Add Audio to Video produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.
Files are processed locally in your browser using WebAssembly. This input is required.
Saved FFmpeg presets (stored locally)
Note: This tool requires uploading both a video and audio file. Current implementation is limited to single file input. Use desktop video editing software for adding audio tracks.
1.0 = normal, 0.5 = half volume, 2.0 = double
Report a bug
If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.