How to remove hum, hiss and background noise from a video on a Mac

Clean up wind, traffic, hiss, mains hum, clicks and clipping in a video's soundtrack on your Mac — and keep the picture exactly as it is.

Updated 2026-10-07 · Code Boop

Background noise comes in many kinds, and each needs a different fix. Knowing which one you have makes the difference between clean speech and a watery, over-processed sound.

Which noise do you have?

  • Steady hiss (old tape, cheap microphones): Hiss & Noise Clean.
  • Hum at 50 or 60 Hz from mains power: hum removal.
  • Wind, traffic, crowds: Speech Denoise AI or Dialogue Isolation AI.
  • Clicks and crackle (vinyl, film optical tracks): click and crackle repair.
  • Distortion from a recording that was too loud: clipping repair.

Step by step

  1. Open the video in AI Sound Restore Pro; it analyses the soundtrack and shows the noise floor, hum and loudness.
  2. Pick an engine — Dialogue Isolation AI for the strongest clean-up, Speech Denoise AI for a lighter touch.
  3. Compare Original and Restored while playing, then export MP4/MKV with the picture untouched, or M4A, WAV or FLAC.

Your recordings never leave your Mac. Working with interviews or home videos? This also gives AI transcription far cleaner audio to work with.

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