Blender's compositing capabilities are on par with any other compositing program out there, unfortunately, few editors think to use Blender to satisfy their compositing needs. This tutorial goes through a staple in the video editor's arsenal - easily blurring faces, or anything else in the scene. The tutorial covers tracking (in order to cut down on the amount of manual key frames), manual keyframing a mask, and then using the compositor or VSE in conjunction with the created mask to apply a blur effect.