Free online video volume booster

Video Volume Booster – Increase Video Volume Online

Increase video volume online with our free video volume booster. Make MP4, MOV, and WebM videos louder up to 400%, preview the boosted audio, and export directly in your browser.

Private video volume booster

Drop your video here to make it louder

Boost MP4, MOV, WebM and other common video files. Your file stays on your device while you edit.

Free · No signup · Files stay on your device

How to Increase Video Volume Online

Increase the volume of a video online in three simple steps. Upload your file, choose a louder volume level, preview the boosted audio, and export the result.

Upload your video

Choose an MP4, MOV, WebM, or another supported video file from your device.

Increase the volume

Use the slider or choose 150%, 200%, 300% or 400% to increase the volume of video audio.

Preview and export

Listen to the boosted audio, adjust if needed, then export the louder MP4.

Browser based

Free Online Video Volume Booster

This free video volume booster works in your browser with no signup. Choose a video volume booster online setting, preview the result, and export directly from your device.

Use it when you need to increase video volume online free and make a quiet video easier to hear without opening a full video editor. For clips that also need repeated playback, try the video looper.

Files stay on your device

Your video stays in your browser while you boost the sound.

No signup

Open the page, choose a file, and export.

Keeps the picture intact

The tool focuses on the sound, so your video frame and timing stay the same.

0% to 400%

Mute, reduce, keep original, or make video louder.

Make videos louder

Make Your Video Louder Online

Need to make videos louder? Use the volume slider to boost quiet speech, recordings, screen captures, or camera audio. You can increase the original audio level without changing the video's playback speed, dimensions, or crop. Start with 200% for a clear boost, use 150% for a small correction, or try 300% when a phone or camera microphone was far from the speaker. Need to mute a video completely? Use Remove Audio from Video.

MP4 audio booster

MP4 Audio Booster – Increase MP4 Volume Online

Use the MP4 audio booster to increase MP4 volume online. Upload your MP4 video, choose a volume level from 0% to 400%, preview the louder audio, and export the result. The video volume booster also supports common formats such as MOV and WebM.

100%0 dBOriginal volume

150%+3.5 dBA gentle boost for slightly quiet clips

200%+6 dBA strong default for low-volume videos

300%+9.5 dBUseful when the microphone was far away

400%+12 dBMaximum boost for very quiet sources

Clipping & cleanup guide

How Much Should You Increase Video Volume?

200% (+6 dB) is a safe first boost for most quiet videos. 400% (+12 dB) helps very low recordings but may clip if the source already peaks near maximum.

When loud enough is too loud

Low-volume videos can handle a stronger boost. Videos that already peak near maximum should use a smaller increase or enable Normalize audio before export. If the preview sounds crunchy or fuzzy on loud words, bring the slider back toward 150% or 200%.

When to use Normalize Audio

Normalize is helpful when boosted sound becomes uneven or distorted. It tames harsh peaks in speech, interviews, lectures, and screen recordings.

Leave it off

Best when the whole video is simply too quiet and the audio level is otherwise consistent.

Turn it on

Useful for dialogue that jumps between quiet and loud moments, or when a strong boost starts to sound harsh.

Preview again

Normalize can change the feel of music or ambience, so listen before exporting the final video.

Why Is My Video Volume So Low?

Quiet video audio usually comes from the recording setup or the source file. A quick volume boost can make speech, demonstrations, lectures, and screen recordings easier to hear. Try 150% to 200% first, then move higher only if the preview still sounds too quiet.

The microphone was too far from the speaker or subject.
The recording level was set too low on the camera, phone, or screen recorder.
The source audio was quiet before it was added to the video.
Dialogue and background sound were mixed at inconsistent levels.
The video was normalized or compressed with conservative loudness settings.

Private browser processing

Increase Video Volume Privately in Your Browser

Your video is processed locally in your browser instead of being uploaded to a remote editing server. This makes it easy to boost private recordings, interviews, screen captures, and other videos directly on your device.

Frequently Asked Questions

How do I increase video volume online?

Upload your video, choose a louder volume level, preview the boosted audio, and export the result directly in your browser.

Can I increase video volume online for free?

Yes. Upload a video, choose a louder setting such as 150%, 200%, 300% or 400%, preview the boosted audio, and export the result in your browser.

How do I make a video louder?

Use the volume slider to boost the original audio level. Start with 200%, preview the result, then export when the video sounds clear.

How do I increase the volume of an MP4 video?

Upload your MP4, choose the desired volume level, preview the boosted audio, and export the updated video as an MP4.

Can I increase video volume to 200% or 400%?

Yes. 200% is about +6 dB and 400% is about +12 dB. Very high levels can cause clipping, so preview the audio and use Normalize audio when needed.

Will increasing video volume reduce video quality?

Increasing volume usually keeps the video picture the same. Only the sound is adjusted, and the result is exported as a new MP4 file.

Why does boosted video audio sound distorted?

Distortion usually means the boosted audio is clipping because loud parts are being pushed too high. Lower the volume level or enable Normalize audio before exporting.