Add background music, voiceovers, and sound effects to your videos. Control volume levels and sync audio — all in your browser.
Fast, reliable, and compatible with all major file formats.
Drag and drop or select a video file from your device.
Import an audio file and position it on the timeline.
Download your video with the new audio track.
A complete toolkit built for speed and quality.
Import your own audio files or choose from available tracks.
Fine-tune volume levels for each audio track independently.
Works with MP4, WebM, MOV, and all major video formats.
Browser-based processing delivers results quickly.
Your files are processed securely and never shared.
Download your edited video in high quality.
Find answers to common questions about this tool.