Add Music to Video Online

Add MP3, WAV, M4A or OGG music to a video locally with preview, volume controls and MP4 output.

Need help with the calculation?
Files are not sent to a server. Processing runs in your browser, and the queue handles one file at a time so the device stays responsive.
Drop MP4/MOV/WEBM + MP3/WAV/M4A/OGG files here or tap to choose several files
No files selected.
Video and music stay in the browser. Add one video and one audio file; a visual block with both files will appear below.
Exact settings
In queue0
Done0
Size saving-
Add MP4/MOV/WEBM + MP3/WAV/M4A/OGG files.
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How to use it

Add one video and one audio file, check both previews, set volumes and process. The new MP4 is created on your device.

Recommended settings

By default music replaces the original sound. Turn on mixing if you need to keep voice or ambience and lower the music volume.

Privacy

Your files are not uploaded to a server. The editor runs in your browser with local libraries from this site.

Limits

Large images can take longer on phones. If the browser slows down, process fewer files at once or choose a smaller output format.