How to blur video background? I was wondering how to blur a video background (a person is talking and you wish to remove the background)? Should the compositor be used?

Example video that you can use for testing: http://www.youtube.com/watch?v=zncqb-n3zMo

Example of blurred background image:
Yes, the compositor should be used. The most straightforward approach would probably be to animate a mask which you use to selectively blur (or remove) parts of the video.