If you want to hide the identity of a person / thing / place in a video, then you'll have to mask it or create a blur effect on the object. Here are a list of links that will help you easily blur a video or blur a part of video in MAC: Go to this page : http://www.rippletraining.com/free_tutorials_oldies_but_goodies.html and watch the video titled Cops. It is a free video … [Read more...] about How Do You Blur A Face In A Video On Mac