Drop a clip, then choose a music file.
Adjust music and original volume, loop and fade-out.
The clip plays once while it is re-recorded with the mix, then you download it.
Turn the original sound up or down against the music.
Repeat a short track to fill the whole video.
End the video with a smooth fade.
Nothing is uploaded to any server.
If the video has speech, keep the music well below it — around 20–30% — so the voice stays clear. For videos without speech, 70–100% works. Set the original sound to 0% if you want only the music.
If the track is shorter than the video, turn on Loop and it repeats until the end. If it is longer, it is cut at the end of the video. A fade-out over the last two seconds makes the ending feel intentional.
Use music you made, own or have a licence for. Platforms can mute or take down videos with unlicensed tracks, and a licence for personal listening is not a licence to publish. Many libraries offer royalty-free tracks with clear terms.
MP3, WAV and M4A work in all modern browsers. If a file will not load, convert it to MP3 or WAV with the Audio Converter first.
The video and the music are mixed in your browser with the Web Audio API and recorded together with the picture. Export plays the clip once in real time and produces a WebM file. Nothing leaves your device.
Resize, crop, convert and clean up images, audio and video — all in your browser.
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