Add music to video

How it works

1. 1

   Add video and music

   Drop your video, then pick the audio track (MP3, WAV, M4A…). Both stay on your device.

2. 2

   Replace or mix

   Swap the soundtrack entirely, or layer the music under the original sound with separate volumes.

3. 3

   Download

   The picture is copied untouched, so it's fast. No watermark, no signup.

Why nothing uploads

Other tools send your video to their servers, which costs them money per file, so they add watermarks, cap file sizes, and make you sign up. This tool does the work right here in your browser using your own device. Your file is never uploaded, so there is no wait, no watermark, no size limit, and no account.

Questions

Can I keep the original sound and add music underneath?

Yes, choose "Mix them" and set the music quieter (60% original / 100% music is a good start for background music).

What if the song is shorter than the video?

Tick "Repeat the track" and it loops seamlessly to cover the whole video. Music longer than the video is always cut to fit.

Which audio formats work?

MP3, WAV, M4A/AAC, OGG, FLAC, anything your browser can read.

Does this re-encode my video?

No. Only the audio is rebuilt; the video stream is copied bit-for-bit, so quality is untouched and processing is quick.

Do my files get uploaded?

No. Everything happens in your browser; your files never leave your device.

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