Handytool
VideoFreeRuns locally

Voice enhancer for video

Clean up the voice in any video — remove background hiss, traffic, fans, and room noise — entirely in your browser.

.mp4.mov.webm.mkv.m4v
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Runs entirely in your browser.

About the Voice enhancer for video

Voice enhancer for video pulls clean speech out of recordings ruined by fan hum, traffic, mic hiss, or echoey rooms — perfect for rescuing Zoom meetings, lecture captures, vlogs shot in the street, or interview footage with poor mic placement. Drop in an MP4, MOV, WebM, or MKV and Handytool extracts the audio, runs an RNNoise neural denoiser, and re-muxes the cleaned voice over the original video — all entirely in your browser, so the file never leaves your device. Adjust the cleanup strength slider to balance how aggressive the noise removal is versus how natural the voice sounds. The output keeps the original video stream untouched and only swaps in the cleaned audio.

Voice enhancer for video features

  • 01

    Voice in, video out

    Other denoisers force you to extract audio, clean it, and remux yourself. Handytool does the whole pipeline in one click — drop in a video and get a video back, with the original picture quality untouched and clean speech where the noise used to be.

  • 02

    Tunable cleanup strength

    100% strength applies the full neural-network denoiser; lower it to blend the cleaned signal back with the original for a more natural sound. Useful when the noise is light and over-cleaning would make the voice sound robotic.

  • 03

    Runs locally, no upload

    The whole pipeline — audio extraction, neural denoising, video mux — happens inside your browser using WebAssembly. Your video never touches a server, no account is needed, and there are no length limits beyond the 500 MB file cap.

Voice enhancer for video FAQ

What kinds of noise does it remove?
Steady background noise like fan hum, AC, traffic, mic hiss, refrigerator buzz, and mild room reverb. It also dampens keyboard clicks and crowd chatter behind the speaker. Sharp transient noises (a slammed door, a single car horn) are harder.
Will it change the video quality?
No. The original video stream is copied byte-for-byte — only the audio is replaced. So the picture, resolution, frame rate, and length stay exactly the same as the input.
Why is the output file slightly different in size?
Because the audio gets re-encoded after cleanup (AAC for MP4/MOV/MKV, Vorbis for WebM). The video stream is not re-encoded, so the size change is just the audio track.
How long can the video be?
Files up to 500 MB are accepted. Processing runs at roughly 2–4× real-time on a modern laptop, so a 5-minute video is typically cleaned in 90 seconds to two minutes.
Is the video uploaded to a server?
No. Both the noise-suppression model and the video engine run inside your browser using WebAssembly. Your file stays on your device — Handytool has no upload step.
What output format do I get?
The same container as the input — drop in MP4 and you get MP4 back, drop in WebM and you get WebM back. The video stream is untouched; only the audio is replaced with the cleaned version.

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