iMovie 11 distorting audio on mp4 import
Hi,
I often run webinars. I record my webinars and then download them so I can enhance them before releasing them back to the general public, however the last two times I have downloaded the mp4 files, these play great in quicktime, there is not distortion of the sound BUT when I import the file into iMovie11, the audio sounds like an old record, there are crackles on any clips where the voice goes up, such as when asking a question. This is a recent occurrence, I have not had this before. This began to happen about two weeks ago, can anyone help give me some tips on what it might be.
As far as I know I haven't changed any settings, the microphone setting on general is fine, it plays fine in quicktime but in iMovie 11, there is definitely some sound distortion. Any pointers would be really great. Thanks
iOS 6.1.4