Adjust video volume
Lower or amplify a video’s audio from 0% to 200% without uploading the file.
Private: it runs in your browser and your file is never uploaded. How to check it
MP4, MOV, WebM or MKV · up to 500 MB · processed on your device, the file is never uploaded.
You can also drag a video onto this page.
0: silence · 100: original · 200: double amplitude. Amplification can distort.
Your files are processed here, on your device
We do not send the contents of your files or text to any server: everything is processed in your browser’s memory. No account is needed, there is no daily quota and we use no analytics or trackers. Each tool has size limits to protect your device’s memory.
A connection is only needed to load the site. After that you can disconnect and the tools keep working (some previews may need the connection). Hosting may receive technical visit data. Favorites store only tool identifiers in this browser.
How we handle your data →How to use this tool
- Choose the video on your device or drag it onto the page.
- Adjust the options and press the main button; progress is shown while it works.
- Check the preview of the result and download it.
An example you can verify
Lower or amplify a video’s audio from 0% to 200% without uploading the file.
Example input
100 % → 50 %
Expected result
0,5 ×
Check the preview of the result and download it.
Adjust video volume: uses and practical guidance
Select a video with an audio track and enter the desired volume. 100% keeps the amplitude, 50% halves it, 200% doubles it, and 0% creates a silent track. Sound is re-encoded while the picture is copied when the format allows it. This is neither automatic normalization nor noise removal. Amplifying can clip peaks; the tool clamps samples to the allowed range, which can cause distortion. Listen at a comfortable level before saving. Videos without audio produce a clear message. The same gain is applied to every channel and throughout the recording, so quiet sections and loud sections keep their relative levels.
Adjust video volume. The video is opened and processed in your device’s memory and is never sent to a server, so speed depends on your computer and the file size. Copying tracks without re-encoding is almost instant; re-encoding can take several minutes for long or high-resolution videos. While it works, the page shows progress and a cancel button. Keep the tab open and visible until it finishes, because some browsers slow down background tabs. The 500 MB limit protects device memory. If the file is larger, split it into parts first. The original is never modified: the tool creates a new file that you download.
Adjust video volume. Play the complete result before using it: check that picture and sound stay in sync, that no seconds are missing at the start or end, and that quality is sufficient for your purpose. Open the file in another player or in the application where you will publish it, because every platform has its own limits for duration, size and format. If the result does not play, try MP4, the most compatible format. Always keep the original video until you have verified the new one, and do not overwrite the source file. If the video contains personal data, remember that this tool does not hide faces or voices: it only changes the file.
A practical check before using the result
Adjust video volume. Lower or amplify a video’s audio from 0% to 200% without uploading the file. Check the preview of the result and download it.
Settings and limits
Select a video with an audio track and enter the desired volume. 100% keeps the amplitude, 50% halves it, 200% doubles it, and 0% creates a silent track. Sound is re-encoded while the picture is copied when the format allows it. This is neither automatic normalization nor noise removal. Amplifying can clip peaks; the tool clamps samples to the allowed range, which can cause distortion. Listen at a comfortable level before saving. Videos without audio produce a clear message. The same gain is applied to every channel and throughout the recording, so quiet sections and loud sections keep their relative levels.
Frequently asked questions
Is it free, and do I need to sign up?
Yes, it is free. You do not need to sign up, create an account or install an app, and there is no daily quota: open the tool and use it. The only limits are file sizes, which protect your device’s memory.
Does it leave a watermark on the result?
No. Snipshed adds no watermark, logo or text of its own to the files you download: the result is yours exactly as you configured it.
Is quality lost?
This operation re-encodes the video, so a small quality loss is possible. Keep the original and check the whole copy before using it.
Does it work on iPhone and Android?
Yes, from your phone’s browser (Safari, Chrome…) and without installing any app. When it finishes, the file is saved from the browser itself: on iPhone it appears in the Files app and on Android in Downloads. With very large files the phone may run out of memory; try a smaller file or a computer. Video operations need a recent browser with WebCodecs, such as current versions of Safari and Chrome.