How to Remove Background Noise in iMovie in 2026 (iPhone and Mac)
iMovie on iPhone and iPad has no noise reduction control, so clean the exported video in your browser. On a Mac, use the Reduce background noise slider. Steps for both.
iMovie on a Mac has a Reduce background noise checkbox. iMovie on iPhone and iPad doesn't: Apple's guide for the mobile app covers volume, mute, fades, and speed, with no noise reduction control. So if you edit on your phone, the fix happens outside iMovie.
The quickest way is to export the video and upload it to the EraseNoise video noise remover. It works in a phone browser, and you hear a free 30-second preview before you process the full video.
Key Takeaways
- iMovie on iPhone or iPad has no noise reduction. Export the video and clean the file.
- iMovie on Mac: select the clip, click Noise Reduction and Equalizer, tick Reduce background noise, and drag the slider.
- The Auto button in iMovie's volume controls raises quiet audio. It isn't a noise filter.
- Steady noise like fans, hum, and traffic cleans up best. A bark or a slammed door over a word usually needs a retake.
Quick answer
On iPhone or iPad: export the movie, open EraseNoise in Safari, upload it, and listen to 30 seconds free. On a Mac: use iMovie's Reduce background noise slider first. If the voice turns thin before the noise is gone, export and try EraseNoise.
Method 1: Clean an iPhone or iPad iMovie export
Apple's guide to adjusting audio in iMovie on iPhone covers muting, the volume slider, fade handles, and speed, and notes that iMovie lowers background music when a clip's sound plays. It doesn't include a noise reduction control. (Adjust audio in iMovie on iPhone, retrieved 2026-10-21.)
- In iMovie, open the project, tap the Share button, and save the video to your phone.
- In Safari, open the EraseNoise video noise remover and upload the video from Photos or Files.
- Listen to the free 30-second preview against the original.
- If it's clearer, sign in and process the full video with paid minutes.
- Download the MP4 and add it back to your iMovie project or share it directly.
You can try the preview without an account, three times a day. Uploads and results are deleted after 24 hours.
Photo: David Wellbeloved, CC BY 2.0.
Method 2: iMovie on Mac, Reduce background noise
Apple's iMovie for Mac guide gives these steps. (Correct and enhance audio in iMovie on Mac, retrieved 2026-10-21.)
- Select one or more audio clips, or video clips with audio, in the timeline.
- Click the Noise Reduction and Equalizer button.
- Select the Reduce background noise checkbox.
- Drag the slider right to reduce more noise, or left to reduce less.
- Play the clip and refine the slider.
Stop raising the slider as soon as the voice turns thin, watery, or metallic. A little room noise sounds more natural than an over-processed voice.
iMovie vs EraseNoise
| Job | Better first workflow |
|---|---|
| Editing on iPhone or iPad | EraseNoise. iMovie on iOS has no noise reduction |
| Light fan or hiss, editing on Mac | iMovie's Reduce background noise |
| The Mac slider thins the voice before the noise is gone | EraseNoise on the exported clip |
| Many clips from the same room on Mac | Select them all in iMovie, then check each one |
| Room echo | EraseNoise echo removal |
| A bark or door over an important word | Retake if possible |
Common mistakes in iMovie
- Using Auto as a noise fix. Apple says Auto boosts the average volume of the selection. On a noisy clip, it makes the noise louder too.
- Looking for noise reduction on iPhone. It isn't in the mobile app. Export and clean the file.
- Pushing the Mac slider to 100%. The voice pays for it.
- Applying one slider position to every clip. A setting that suits a close-up can be too strong on a wide shot.
When EraseNoise is faster
EraseNoise is faster whenever iMovie can't do the job: on iPhone and iPad, where there's no control at all, and on a Mac when the single slider can't remove the noise without hurting the voice. You don't build a noise profile or install anything. It runs in Safari on the phone you edited on.
Frequently asked questions
Can you remove background noise in iMovie on iPhone?
Not inside the app. Apple's iMovie on iPhone guide covers volume, mute, fades, and speed, without a noise reduction control. Export the video and clean it with a tool such as EraseNoise.
Where is noise reduction in iMovie on Mac?
Select the clip and click the Noise Reduction and Equalizer button. Tick Reduce background noise and drag the slider.
Does the Auto button in iMovie reduce noise?
No. Apple says Auto boosts the average volume of the selected audio, which can make noise louder.
Can I clean an iMovie video without a computer?
Yes. Save the video to your phone, then upload it to EraseNoise in Safari. The 30-second preview is free.
The practical takeaway
On a Mac, try iMovie's Reduce background noise slider first. On iPhone or iPad, or when the slider isn't enough, export the movie and upload it to the EraseNoise video noise remover. If you're about to record again on an iPhone, turn on Voice Isolation first.
For more control on a Mac, see Audacity and GarageBand.
