Do you upload my video?
No. Volume processing runs locally in your browser.
Free Online Video Volume Changer
Boost or lower any video's volume — free, instant, with live preview in your browser. Drag the slider and hear it change. No upload, no sign-up.
Frequently asked questions
Will boosting volume reduce quality?
Boosting can cause clipping if pushed too far. Keep gain moderate for clean results.
Does this change the video track?
We focus on the audio track. Video may be copied or remuxed depending on the output container.
Why does this take time?
Changing volume requires decoding and re-encoding the audio track.
Which browsers are supported?
For best results, use the latest Chrome / Edge with WebCodecs support.
Which formats are supported?
Common inputs include MP4/WebM/MOV/MKV. Output supports MP4/WebM/MOV/MKV.