Follow the steps below to edit the audio quality on a .mov file with a little help from Quicktime Pro and Audacity.

1. In Quicktime Pro, export sound the .wav file. Click “File,” then “Export.” Use the dropdown menu to choose “Export Sound to Wave.”
2. Open the file in the Audacity.
3. Find a segment of the background noise you wish to remove.
4. Select that segment of noise.



5. Click “Effect,” then “Noise Removal.”
6. Retrieve the “Noise Profile.”
7. Select the entire sound file.
8. Click “Effect,” then “Noise Removal.” Adjust the “Less/More” bar to determine how much noise to remove, and “Preview” the clip.
9. Click “Remove Noise.”
10. Save the project, and export it as a .wav file.
11. Open the corrected audio file through Quicktime.
12. Select the corrected audio file by moving the markers to the beginning and end of the clip.



13. “Copy” the corrected audio file.
14. Select the existing audio on the .mov file by moving the markers to the beginning and end of the clip.
15. Click “Edit,” then “Add to Selection and Scale.”
16. Click “Window,” then “Show Movie Properties.”
17. Delete Audio Track 1.

Congratulations! Your video clip should now play with corrected sound.