I’ve been having fun putting up screencast tutorials for the courses I teach using responsive video that resizes with the viewport. The only problem is distortion on resize: quality not aspect ratio. The trick with this type of screencast is that viewers are usually working on tasks while viewing so screen space is limited. Not everyone has the benefit of multiple monitors, therefore, you really need flexible media that retains quality on resize. Chris Coyer offers up some creative solutions in his post that should address the problem. I’ll do an update as soon as I give them a try.