Upload your video
Choose an MP4, MOV, WebM, or another supported video file from your device.
Free online video volume booster
Make Your Video Louder in Seconds — Up to 400%
Make your video louder in seconds. Boost MP4, MOV, and WebM audio directly in your browser, preview the result, and export a louder video without installing software.
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
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.
Make videos louder
Make Your Video Louder Online
If your recorded video is too quiet, use the volume slider to make the video louder. 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. Preview before you export so quiet speech becomes clearer without harsh peaks.
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.
MP4 audio booster
Boost MP4 Video Audio Volume
Need to make an MP4 louder? Upload your MP4, choose the desired volume level, preview the boosted audio, and export the updated video. This MP4 audio booster also accepts common formats such as MOV and WebM, then exports the result as an MP4.
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 Loud Can You Make a Video?
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.
Frequently Asked Questions
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 can I boost 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.
Are my videos uploaded to a server?
No. Your video is processed in your browser, so it stays on your device while you edit.
Can I lower video volume or mute a video?
Yes. The slider goes from 0% to 400%, so you can reduce volume to 50%, keep 100%, boost it, or set 0% to mute the audio.
What formats does this video audio booster support?
The tool accepts common video formats including MP4, MOV and WebM, then exports the result as an MP4 file.
What is the best volume level for a quiet video?
Start with 200% for most quiet voice recordings. Try 150% if the video is only slightly low, or 300% when the microphone was far away. Use 400% only after previewing.
Why does my boosted video 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.