Imovie exported sound not good

Hmmm. Not all Mp4 works well in iMovie. It must be Mp4/AAC. AAC is an audio format and stands for Advanced Audio Coding.

Open your clips in QuickTimePlayer and do a Window/Show Movie Inspector. What is shown as the audio format?

Whatever it shows, you can try cleansing the clips by converting the clips to Mp4/AAC with the free download, Handbrake. Handbrake will do it by default. Convert the clip even if it already is in the Mp4/AAC format. Re-rendering often cures audio issues.

You can get Handbrake here:

https://handbrake.fr/

A simple way to do it is to open Handbrake and do a File/Open Source. Navigate to your video and choose it as the source from the resulting screen. Then do File/Start Encoding. Wait a couple of minutes for the conversion to

complete. Then save and import the converted clip into iMovie.

-- Rich

I had the same problem as the original poster; I converted the audio to MP4/AAC like you said and I no longer hear the ticking sound in iMovie. Thank you so much!

Great. Glad it worked for you.

— Rich