Fix Audio

Normalize Video Audio — Fix Quiet or Loud Recordings Free

QUICK ANSWER

Drop in a video where the mic is too quiet or the volume is all over the place. We level the loudness to a consistent -16 LUFS — the same target streaming platforms use — entirely in your browser. Nothing uploads, so it is as fast as your laptop and completely private.

  • No upload
  • No signup
  • No watermark
  • -16 LUFS broadcast loudness
  • Up to 500 MB

Files never leave your browser. The conversion runs locally on your device.

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Free forever — no signup, no watermark, no length cap.

Why your screen recording sounds too quiet

The single most common complaint about screen recordings is that the voice is too soft to hear without cranking the volume — and then a notification chime blows out the listener's ears. That happens because most laptop and headset mics record at a conservative level to avoid clipping, leaving your average loudness 10-20 dB below what people expect. This tool measures the overall loudness of your file and raises (or lowers) it to a steady target, so viewers can press play once and never touch the volume slider again.

What -16 LUFS actually means

LUFS is loudness measured the way human ears actually perceive it, not raw peak amplitude. We normalize to an integrated -16 LUFS with a true-peak ceiling of -1.5 dBTP, which is the sweet spot for spoken-word video: loud enough to be comfortable on phone speakers, with enough headroom that nothing distorts. It is the same neighborhood YouTube, Spotify, and Apple Podcasts normalize their own catalogs to, so your clip will sit at a familiar volume wherever it ends up.

Loudness is not the same as noise — be honest about which problem you have

This tool fixes loudness. It does not remove hiss, fan hum, keyboard clatter, or room echo — in fact, turning a quiet track up will make any existing background noise more audible, not less. If the actual problem is a noisy room rather than a low level, run it through the background noise remover first, then normalize the cleaned audio. The two steps solve different problems and work best in that order.

The better fix: get the level right while recording

Normalization is a rescue, not a substitute for a decent recording. If you check your mic and speak at a consistent distance, your audio often comes out fine and you can skip this step entirely. Run a quick mic test before you hit record, then capture clean, well-leveled video with Clipy — the free screen recorder with no watermark and no signup wall.

Common questions

Will normalizing make a quiet video noisier?

It can. Raising the loudness lifts everything in the track, including any background hiss or hum. If your recording has audible noise, clean it with the background-noise remover first, then normalize. Normalization only adjusts loudness — it never removes noise on its own.

Does this re-encode my video and lose quality?

For MP4 and MOV files the video stream is copied untouched (-c:v copy) — only the audio is re-encoded to AAC at 192 kbps, so the picture is bit-for-bit identical. WebM and MKV files cannot be copied into an MP4 container, so their video is re-encoded to H.264 at a high-quality setting.

What loudness target do you use?

Integrated -16 LUFS with a true-peak limit of -1.5 dBTP and an 11 LU loudness range. That is the standard target for spoken-word and streaming video, and it matches the volume people expect from YouTube and podcast apps.

Is my file uploaded anywhere?

No. The processing runs entirely in your browser via FFmpeg WebAssembly. Your video never leaves your device, which is also why it is fast — there is no upload or download round-trip to a server.

Why is there a file-size limit?

Browser-based FFmpeg works in memory, so we cap input around 500 MB. Most recordings under an hour fit comfortably. For very large or 4K files, normalize with the Clipy desktop app or a standalone FFmpeg install instead.

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