Enhance Video Audio — Improve the Sound of Any Video, Free & In-Browser
Make a video sound the way it should — clean the soundtrack, then shape it with a preset and a level boost, and keep the picture exactly as you shot it. Free, in your browser, nothing uploaded.
Replaces tools like
Works well with
Eziclip's Sound Enhancer improves the audio of a video — it cleans the soundtrack and then shapes it with content presets (Vocal, Podcast, Voiceover, Instrument, Music) and a Boost control so the result sounds clearer, fuller and more present, not just quieter. The enhanced audio is muxed straight back onto your untouched video, so you download a better-sounding MP4. Everything runs in your browser; nothing is uploaded, with no watermark and no sign-up.
Enhancing audio is more than removing noise
Most tools stop at "remove background noise from video," and that's only half the job. Stripping the hiss and hum out of a clip gets you a quieter recording, but a quiet recording can still sound flat, distant and dull — the noise is gone and the voice still sounds like it was filmed across the room. Enhancing the audio means going further: clean the soundtrack first, then shape what's left so it sounds clearer, fuller and more present in the cut.
This is the Sound Enhancer side of the same video tool. It removes the steady background noise the way you'd expect, but it doesn't hand you a thin, gutted track — it follows the cleanup with a content-matched EQ and an optional level lift so the result is something you'd actually want to keep. The picture never changes; only the soundtrack gets better.
Presets that shape the soundtrack to match your clip
The enhancement isn't one-size-fits-all, because a talking-head video and a music video don't want the same treatment. You pick a preset that matches your clip and it does two things at once: routes the audio to the right engine, and applies the right tonal shaping. Vocal, Podcast and Voiceover run a voice-tuned engine and add presence and air so speech cuts through; Instrument and Music switch to a spectral engine that lowers the noise floor while preserving the timbre of a guitar, a piano or a music bed under the picture.
That split is the whole point of improving audio rather than just denoising it. A voice-only cleaner mangles music; a blunt filter dulls a voice. By matching the preset to the content, the tool improves a noisy interview and a hissy music clip in completely different, appropriate ways — each comes out sounding like a better version of itself, not a processed file.
Boost a quiet clip, and Maximum for the worst rooms
A lot of "bad" video audio is just quiet audio — a phone shot from across the room, a far-from-the-mic subject, a lavalier buried under a jacket. "Boost quiet audio" lifts a soft recording to a usable level as part of the enhancement, so the voice sits forward in the mix instead of buried, and it's peak-limited so a loud moment won't clip. That alone can be the difference between a clip that feels amateur and one that feels intentional.
For the genuinely rough takes — an untreated room, traffic through the window, a guest on a bad connection — "Maximum" is a voice-isolation mode that clamps down hard between words, so room tone in the gaps drops to near silence and the speech stands clear on top. It's aimed at speech and will over-gate music, which is exactly why it's an optional toggle. Use it where the room is fighting you, and leave it off where the clip is already close.
Hear the improvement on your actual video, MP4 out
When it finishes, you get an Original ⇄ Enhanced switch right on your video. You flip between the source and the improved soundtrack while watching the footage, so you hear the difference in context — fuller, clearer, more present — before you commit, no exporting just to check. Your original is always kept, so you can re-run at a different preset whenever a pass takes too much or too little.
Export gives you a clean MP4: the enhanced audio remuxed onto your untouched video. The video stream is copied, not re-encoded, so there's zero generational quality loss on the picture — only the audio track is replaced. It's tuned for short-form, so clips up to about two minutes are the sweet spot, which covers the social videos you actually post.
Free, private, and nothing uploaded
The whole thing runs on your own device through WebAssembly — the video is decoded, the audio is enhanced, and the file is remuxed in your browser. There's no upload, no server touching your footage and nothing for anyone to keep, so a confidential interview, an unreleased clip or a client video never leaves your machine. That's not a policy line on a page; it's simply how the tool is built.
And it's free for every creator: no watermark stamped on the export, no account to create, no paywall waiting at download. The engines download to your browser once and then everything runs locally. If a better-sounding clip saved you a re-shoot and you want to chip in, there's a button — but the improved MP4 is yours either way.
How to enhance a video's audio
- 1
Drop your video
MP4, MOV or WebM — it loads straight into your browser and is never uploaded. Clips up to about two minutes work best for short-form.
- 2
Pick a preset and shape it
Vocal, Podcast or Voiceover for talking footage; Instrument or Music for a clip with a music bed — it auto-routes to the right engine and shapes the tone to match. Turn on "Boost quiet audio" for a soft recording, or "Maximum" to fully isolate a voice in a noisy room.
- 3
A/B on the video, then download the MP4
Flip Original ⇄ Enhanced to hear the improvement right on your footage. When it sounds right, download a clean MP4 — the video stream is copied untouched and only the audio is replaced. Free, no watermark, no sign-up.
Questions
Drop your video into Eziclip's Sound Enhancer and pick a preset that matches the clip — Vocal, Podcast or Voiceover for talking, Instrument or Music for a music bed. It cleans the soundtrack and then shapes it so the audio sounds clearer, fuller and more present, lifts a quiet recording with Boost, and muxes the result back onto your untouched video. You A/B it on the footage, then download a clean MP4. It's free, runs in your browser, and nothing is uploaded.
It does both. Removing the steady background noise is the first step, but the enhancer doesn't stop at a quieter, thinner track — it follows the cleanup with a content-matched EQ that adds presence and air to speech or preserves the timbre of instruments, plus an optional level boost. The goal is audio that sounds genuinely better in the cut, not just quieter.
No. Only the audio is replaced — the video stream is copied untouched, so there's no quality loss on the picture. You download a clean MP4 with your original footage and an improved soundtrack.
Yes to both. After processing you get an Original ⇄ Enhanced switch right on your video, so you flip between the source and the improved audio while watching the footage. For a clip with a music bed, the Instrument or Music preset routes the audio to a spectral engine that lowers the noise floor while keeping the instruments intact, instead of the voice-only treatment that mangles music.
Nothing is uploaded. The video is decoded, the audio enhanced, and the file remuxed entirely in your browser via WebAssembly, so confidential or unreleased footage never leaves your device. It's free for everyone — no sign-up, no watermark on the export, and no paywall at the download step.