Make your video's audio louder or quieter.
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A volume changer adjusts how loud or quiet a video's audio track plays back, without touching anything about the visual content. This is useful whenever a recording came out too quiet to hear comfortably, or too loud compared to other clips you're combining it with.
Pick a percentage from the dropdown — below 100% makes the audio quieter, above 100% boosts it louder — and the tool applies that gain uniformly across the entire audio track, while leaving the video stream completely untouched and unre-encoded for maximum speed and zero visual quality loss.
This is especially handy for phone-recorded videos where the microphone picked up a distant or soft voice, videos you're preparing to combine with other clips that have inconsistent volume levels, or any recording that simply needs to be turned up or down before sharing.
Keep in mind that boosting volume very aggressively (300% or beyond) can introduce audible distortion or clipping if the original audio was already fairly loud, since amplification can't add clarity that wasn't in the original recording — it can only make the existing signal, including any background noise, louder.
If your original audio has a lot of background hiss or noise, boosting the volume will make that noise louder too, since this tool performs a simple uniform amplification rather than intelligent noise reduction — for genuinely noisy recordings, the improvement from volume boosting alone will be limited.
In short, this is a quick, lossless-for-video way to bring a recording's audio level in line with what you actually need.
For consistency across a series of clips — say, several separate interview recordings you plan to combine — running each through this tool to normalize them to a similar perceived loudness before merging can prevent jarring volume jumps between segments in the final video.
If you're unsure how much boost you need, start with a moderate 150% setting, preview the result, and step up gradually rather than jumping straight to the maximum boost, since it's easier to notice distortion early than to fix an over-amplified track afterward.
In short, this tool gives you quick, direct control over playback loudness without requiring any dedicated audio-editing software just to turn a video up or down.
A quick before-and-after comparison using the preview player is the easiest way to confirm your chosen level sounds right before downloading the final file.
Give it a try any time a recording came out just a little too quiet — or too loud — to share as-is.
Whichever direction you need — louder or quieter — the change applies instantly across the full length of the clip with no manual keyframing required.
Very high boosts (200%+) can cause clipping or distortion if the original audio was already loud; start with a moderate boost and check the result.
No, the video stream is copied without re-encoding — only the audio track's loudness is changed.
For fully removing audio rather than just lowering it, use our dedicated Audio Remover tool instead.
No, this only changes overall loudness; it doesn't perform noise reduction or clarity enhancement on the audio.