How to Clean Audio From a Smartphone Video
Updated October 2026
A phone video has its sound built in, and the phone’s microphone is often far from the speaker. You can clean the sound on its own and put it back, keeping the picture as it is.
The short version
- Separate the audio from the picture, clean it, then put it back.
- The picture is copied, not re-encoded, so its quality does not drop.
- Phone videos often have wind, room echo and clipping; check each.
- Keep the original video in case you want the old sound back.
Why clean the sound on its own
Cleaning a video directly can change the picture if the tool re-encodes it. Separating the sound lets you clean the voice and leave the picture alone.
What to check first
Listen for wind on the mic, room echo, hum from the lights or a charger, and clipping on loud moments. Each has a different fix. The wind guide and the hum guide cover two of them.
Clean and check
Clean the sound gently, then listen to the whole clip, not only the speech. A cleanup that sounds good on talking can make music sound thin.
Put it back
Replace the sound in the video with the cleaned version. Check the start, the end and any cut. The replace audio guide has the steps.
Clean the video sound, keep the picture
Tunedzy replaces the sound of an MP4 or MOV with a cleaned version and copies the picture as it is.
Free tools for this
Frequently asked questions
Will my video get worse?
No. The picture is copied, not re-encoded. Only the sound changes.
Can I clean the sound from a phone video on my phone?
Tunedzy Go cleans a recording or audio file on your phone. Replacing the sound in a video is a Windows app step for now.
What if the video has no sound?
There is nothing to clean. Record a voice separately and add it to the video.
Keep going
How to Put Clean Audio Back Into a VideoHow to Remove Wind Noise From Audio
How to Record a Voiceover on Your PhoneAll guides and comparisons · Tunedzy Go on your phone · Pricing