Fast, with no loss of quality
Removing the sound doesn't touch the picture. The video stream is copied into a new file of the same type, so it takes seconds even for long recordings and looks exactly like the original. The new file is usually a little smaller too, because the sound is gone.
Quieter or louder
Choose Change the volume to keep the sound but adjust it, for example to tone down a loud background track before adding a voice-over, or to lift a quiet recording. Only the sound is processed; the picture is still copied as it is. If you lift the volume a lot, the loudest moments are held at the limit so they don't distort.
Private by design
The video is opened and saved by your own browser, using its built-in video engine. Nothing is uploaded, so personal videos, client work and recordings of children stay on this device. Once the page has loaded, it works without an internet connection.