Video Volume Booster Online
Make quiet video audio easier to hear. Increase the whole soundtrack or boost one quiet section, preview the result and export a louder MP4.
Free to use · No sign-up required · Files stay on your device
Turn up quiet video audio and see the difference
Choose a level to compare the original waveform with the adjusted result. After upload, you can preview the real soundtrack with its video before exporting.
Choose a preview level
150%
Louder level
A useful first choice for softly recorded speech.
This visual shows the selected gain. The audible result depends on the headroom and peaks in your source video.
Video previewPicture stays unchanged
00:12 / 00:24Peak protection applies when needed
Whole video or selected passage
Boost the whole video—or just one quiet section
Global controls make every moment louder. AudioMuse also lets you split the original soundtrack and raise only the part that needs help.
- Keep already-loud clips at 100%.
- Choose a different level for the quiet passage.
- Preview both edit points before exporting.
00:18 / 00:42
0:000:100:200:300:40
Video
Original audio
100%175%Selected100%
Volume175%
Use the smallest useful boost
Make the video louder without ignoring clipping
Increasing gain moves every sound closer to the digital ceiling. Peak protection reduces the final mix when needed, but it cannot recreate missing detail or repair distortion already present in the recording.
Make quiet video easier to hear where it matters
Start from the recording problem, choose whether the whole soundtrack or one passage needs help, then check the result in context.
The microphone was too far away
A family clip, vlog or outdoor recording looks right, but the voices are difficult to hear at normal playback volume.
- 1Choose the adjustment
Start at 150%. Check the loudest moment, then move toward 200% only if the recording still has headroom.
- 2Preview the result
A more audible MP4 without changing the timing or replacing the original picture.
Original audio
Adjusted section
The explanation is softer than the screen audio
A walkthrough can become tiring when narration drops behind clicks, alerts or recorded system sound.
- 1Choose the adjustment
Split around the quiet explanation and raise only that clip while leaving already-loud sections at 100%.
- 2Preview the result
More consistent instructions without over-amplifying the complete recording.
Original audio
Adjusted section
One answer or lesson section was recorded quietly
Distance from the microphone or a change in speaking level leaves one passage noticeably softer than the rest.
- 1Choose the adjustment
Isolate the passage on the timeline, boost it and preview the transition on both sides of the edit.
- 2Preview the result
Speech that is easier to follow while the surrounding video keeps its original level.
Original audio
Adjusted section
How to increase video volume online
One upload opens the original soundtrack already selected and ready to adjust.
- 1
Upload your video
Choose a compatible file. The video and its first readable audio track open together in the editor.
- 2
Choose the volume level
Raise the whole soundtrack or split around one quiet section and adjust only that selected clip.
- 3
Preview and export MP4
Check the loudest passage as well as the quiet part, then download the finished video.
Increase the sound while keeping the video in view
Work with the original soundtrack, then export picture and adjusted audio together as one MP4.
MP4, MOV, M4V, WebM, MKV
One file up to 100 MB and 10 minutes, with a video stream and readable audio track.
MP4 with stereo AAC audio
Compatible H.264 picture streams are copied; other readable video codecs are converted to H.264.
The current workflow uses the first original audio track. Additional audio streams and subtitle tracks are not included in the export.
Change video volume without uploading your media
The editing engine runs in your browser, so you can adjust and export without sending the source video to an AudioMuse processing server.
Processed on your device
Video and audio processing use your browser memory and computing power.
No sign-up or watermark
Open the tool, adjust the soundtrack and export without creating an account.
Original file stays unchanged
The finished MP4 is a new file. Your source video is never overwritten.
Video volume booster FAQs
Answers about MP4 volume, selected sections, clipping, privacy, formats and export.
How do I increase video volume online?
Upload a supported video above. Its original soundtrack opens selected in the video editor. Raise Volume above 100%, preview the result with the picture, then export and download MP4.
Can I make only one section of a video louder?
Yes. Place the playhead at the beginning and end of the quiet passage and split the Original Audio clip at both points. Select the middle clip and raise its volume while leaving the other clips at 100%.
Can I increase the volume of an MP4 video?
Yes. MP4 is supported alongside MOV, M4V, WebM and MKV. The finished video downloads as MP4 with stereo AAC audio.
How much can I boost the volume?
The Volume control runs from 0% to 200%. Start around 150%, preview the loudest passage and use only as much gain as the recording needs.
Why does my video still sound quiet at 200%?
A few loud peaks can use the available headroom even when most of the recording sounds quiet. Peak protection keeps those peaks below the digital ceiling, so the final audible increase depends on the source.
Will increasing video volume cause distortion?
Peak protection reduces the final mix when necessary to prevent new hard clipping. It cannot repair clipping or distortion already recorded in the source, and increasing gain can also make existing background noise louder.
Will the picture quality change?
Compatible H.264 video streams are copied without re-encoding. Other readable video codecs are converted to H.264, which can take longer and may affect picture quality. The video duration stays unchanged.
Can I decrease or mute the video sound?
Yes. Move Volume below 100% to make a selected clip quieter, set it to 0% to silence it or use Remove Audio from Video when you want to remove the soundtrack entirely.
Are my video files uploaded?
No. The video, audio edits and export are processed locally in your browser rather than uploaded to an AudioMuse processing server.
Can I increase video volume on a phone?
Yes, for compatible short files. Video processing requires device memory, so a desktop browser is more reliable for larger files or projects with several edits.
Which formats and file sizes are supported?
Upload one MP4, MOV, M4V, WebM or MKV file up to 100 MB and 10 minutes. Codec support depends on the browser and the media contained inside the file.
What happens to subtitles or additional audio tracks?
The current workflow uses the first readable original audio track. Additional source audio streams and subtitle tracks are not carried into the MP4 export.
Make your quiet video easier to hear
Upload the video, choose the smallest useful boost and preview it before exporting.
Upload a video