Two tracks, two faders
Microphone and system audio each keep their own volume, mute and fades, so turning down a loud interface sound leaves your narration exactly where it was.
Audio cleanup
Fix the sound without recording it again.
Your voice and the app’s audio stay on separate tracks, so a quiet narration, a loud notification or a humming room is a slider rather than a re-take.
The problem
The picture is perfect and the sound is a mess. Your voice is a murmur, the app chimes at full volume over the one sentence that mattered, and a fan runs underneath all of it — flattened into a single track nobody can unpick.
What happens instead
Microphone and system audio are captured apart and stay apart. Set each level, fade either one at a cut, and switch on a high-pass filter, a noise gate, voice levelling and compression for the track that needs them — the app’s audio is never touched by what you do to your voice.
In detail
What audio cleanup actually does
Cleanup you switch on per track
A high-pass filter and a soft noise gate for room tone, levelling for a voice that wanders, compression for the peaks — applied to the track that needs them and to no other.
The recording is never written over
Processing happens while the project plays and exports. The captured audio stays exactly as it arrived, so a decision you make today can be undone next month.
What you hear is what ships
The editor plays the mix you are building, at the levels the export will use, so the balance is something you listened to rather than something you discover after a render.
Specifications
The short version
- Tracks
- Microphone and system audio, captured apart
- Per track
- Volume, mute, fade in, fade out
- Voice cleanup
- High-pass, noise gate, levelling, compression
- Applied
- At playback and export; the recordings stay untouched
- Exported audio
- One mixed track in the MP4 or MOV
- Not included
- Transcription, captions, echo cancellation
FAQ
Questions about audio cleanup
Can I remove background noise from a screen recording after recording it?
Yes, on the track that needs it. A high-pass filter and a soft noise gate take out steady room noise — a fan, a hum, an air conditioner — and leave the other track alone. It works on the take you already have, because the cleanup is applied when the project plays and exports rather than when it was captured.
Is this AI noise removal or voice isolation?
No. It is a high-pass filter, a soft noise gate, voice levelling and compression, running on your Mac. It will not lift your voice out of a conversation happening behind you, and it does not cancel the echo of your own speakers, which is why headphones are worth wearing when you record system audio and talk at the same time.
My voice is much quieter than the app I was demonstrating. Can that be fixed?
Yes. The two are separate tracks, so you raise the microphone, lower the system audio, or both, and export. One flattened track is the case that cannot be repaired afterwards, and avoiding it is why the capture keeps them apart in the first place.
Keep reading
The parts that work with it
Camera & audio
Camera, microphone and system audio are captured as independent tracks, so fixing one never damages another.
Read moreTimeline editor
Splitting, trimming, ripple deletes and per-section speed, without exporting into another application first.
Read moreExport
Up to 4K at 30 or 60 FPS, MP4 or MOV, H.264 or HEVC — plus a playable MP4 written the moment you stop.
Read moreFrom the blog
Guides that use audio cleanup
Comparisons
ReScreen vs Cap: A Paid Mac Recorder Against an Open-Source One
Cap is open source, cross-platform and free for personal use. Here is exactly where that is the right answer, and the three places ReScreen still differs.
5 min readComparisons
ReScreen vs CleanShot X: A Video Recorder and a Capture Tool, Compared
Both zoom into your clicks and put the recording on a background. One of them is also the best screenshot tool on the Mac, and that is the decision.
5 min readUse Cases
How to Fix Bad Audio in Screen Recordings: Quiet Voice, Loud App Sounds and Background Noise
A quiet voice, a deafening notification and a humming fan are three different problems. Here is why one flattened track hides them, and how to fix each.
5 min readProduct Features
Why Separate Audio Tracks Save Your Screen Recording
One flattened audio track means one loud ping can ruin a good take. Here is what recording mic and system audio separately lets you fix afterwards.
5 min readRecord the next one properly
Install it, hit ⌥⌘R, and watch a take that would normally cost you an evening in a timeline come out finished.
macOS 13 Ventura or later · Apple Silicon and Intel