A video that is too quiet makes people reach for the volume knob. One that is too loud, or that clips and crackles, is worse. This page lets you change video volume for the whole file, by a set amount or automatically, without opening an editor.
You get three ways to work: Adjust, Normalise and Mute. Pick one, press Change volume, and save the new video. Everything runs in your browser, so your video is never uploaded. Read on to choose the right mode and avoid the usual trouble with distortion.
How to change video volume in four steps
- Drop a video onto the page. You can add several and treat them all the same way.
- Under 'Do', choose Adjust, Normalise or Mute.
- If you chose Adjust, drag the Level slider. Press play to hear the result before you save anything.
- Press Change volume and save the new video, or download a batch as a zip.
The new file is an MP4. Its name is your video's name plus a short note about what was done: _louder, _quieter, _normalised or _muted. Your original video is not changed.
A waveform of the sound sits under the picture. It rescales as you move the slider, so you can see the change as well as hear it.
Adjust, Normalise or Mute: which mode to use
| Mode | What it does | Use it when |
|---|---|---|
| Adjust | Raises or lowers the sound by an amount you choose, from 0% to 400% | You know roughly how much louder or quieter you want it |
| Normalise | Lifts the loudest point of the sound to -1 dBFS (just under the maximum) | You do not know how much to add |
| Mute | Removes the sound track completely | The video should have no sound at all |
Adjust: set the level yourself
The Level slider runs from 0% to 400% in steps of 5. At 100% nothing changes. At 200% the sound is doubled, which is 6 dB louder, and at 50% it is halved. Quick chips jump to Half, 1.5x, Double and Triple.
The preview plays through a gain control, so values above 100% are really audible. At 0% the video keeps a silent sound track. If you want the track gone, choose Mute instead.
Normalise: let the tool work out the amount
Normalise finds the loudest point and lifts the whole sound so that point lands at -1 dBFS. The panel shows where the loudest point is now, where it will be after, and the change in dB. A very quiet video is lifted by at most 20 dB, and the panel tells you when that limit applies.
Normalising is about the loudest point, not the average. Two clips with the same loudest point can still feel different in loudness, so if you need an exact feel, use Adjust and listen.
Mute: take the sound out
Mute drops the audio track. The picture is copied as it is where possible, so the job is quick. There is also a page just for it: mute video.
Avoid distortion when you increase video volume
Every recording has a maximum level, called full scale. If you raise the volume so far that the loudest parts would go past it, they are cut flat. This is called clipping, and it can sound harsh or crackly.
The tool warns you before this happens. Bars on the waveform that would go past full scale turn red, and a note says that the loudest parts will be clipped. Treat that as a signal to lower the Level a little.
- Raise in small steps. 150% is often enough, and 200% already doubles the sound.
- Listen to the loudest part, not only the start. Drag the playhead to the noisiest moment and check it.
- If red bars appear, drop the Level until they go, or switch to Normalise, which is designed not to clip.
- Remember that louder also lifts the background hiss. Gain cannot separate a voice from the noise around it.
If you only need a boost, the boost video volume page opens with the level already at double. If you need the opposite, see make a video quieter.
Common reasons to adjust the volume of a video
Volume problems come in a few familiar shapes. Knowing which one you have makes the choice of mode easy.
- A phone video where voices are faint: use Adjust and raise the Level, or let Normalise work out the amount.
- A screen recording that is much louder than the rest of a project: use Adjust and bring the Level below 100%.
- A set of clips from different cameras, each at a different loudness: use Normalise on the whole batch, so each file is set on its own.
- A clip you want to post silently, or put your own music under: use Mute, then add audio if you like.
- A video with a good picture but unusable sound: use Mute, or extract the audio to see whether the sound can be saved on its own.
Whichever you pick, preview it first. The preview plays on the video itself, so what you hear is what the new file will carry.
Working with a batch
Add as many videos as you need and choose the mode once. Adjust and Mute treat every file the same way. In Normalise, each file is measured and set on its own, and the numbers on screen are for the first one. When the run is done, save the files one by one or all together as a zip.
A free, private video volume editor
The work runs on your own computer, in current Chrome, Edge or Firefox. The video is not uploaded, and the server does no video work. There is no account and no watermark. Video tools do not count towards the daily limit that applies to document conversions.
Most videos have no size limit. Some files take longer, and those can be up to 2 GB.
Only the sound is changed. The result is saved as an MP4, so it plays in the same places most videos do.
Set the right volume and save
To change video volume, drop your file in the tool above, choose Adjust, Normalise or Mute, and press Change volume. It is free, and your video never leaves your computer.
If the sound itself is the problem, you may also want to extract the audio from the video.
