Have this problem that I can't figure out. When the recorded sound peaks over the maximum sound limit, the playback throws out a very loud pop/click sound. That doesn't happens when using only the internal mic on camera.

I know that the obvious solution is to simply reduce the mic sensitivity. I would like to know if there is other methods, so I can use normal volume for the recordings.

Also, for those files that is already recorded (MKV full HD), is there any method for reducing the pop/clicks when converting to h264 (using Avidemux or Handbrake).