Add Music & Audio to Video
Pick a video and a song, choose the volumes, and save one MP4 with the new sound.
- 100% in your browser
- No upload
- No sign-up needed
- No watermark
How to add music to a video
- Add your video
Drop the video you want to add sound to on the box above. - Choose the music or audio
Pick a song or voice-over, then replace the original sound or mix both together. - Save and download
The picture is copied as it is and the new sound is added. Download the MP4.
Features
- No uploadProcessing happens on your device with WebCodecs, so even large files stay private.
- No sign-up needed, no watermarkUse every tool as often as you like. Your output is clean.
- Hardware acceleratedUses your device’s video encoder when available, so most jobs finish in seconds.
- Works on phone and desktopRuns in Chrome, Edge, Safari and Firefox on iPhone, Android, Windows and Mac.
Frequently asked questions
Are my files uploaded?
No. The file is read and processed by your browser. It never leaves your device.
Is it free?
Yes. There is no file limit and no watermark, and you don’t need an account.