Author & video podcaster explains the difference between square and non-square pixels and how to make sure your web videos are properly sized. Richard Harrington is author of Producing Video Podcasts, published by Focal Press - http://www.focalpress.com Visit www.focalpress.com for the best media technology books. 20% OFF ALL FOCAL PRESS BOOKS - Use offer code YT007 at http://www.focalbookstore.com Richard's visual communications consultancy, RHED Pixel, creates motion graphics, and produces video and multimedia projects. Check out their resource blog at http://www.vidpodcaster.com.