How to create a Picture-in-Picture video
I put another screencast tutorial together. This one shows a cool feature in Presio that allows you to take a PowerPoint presentation and embed a small video clip inside, effectively creating a picture-in-picture video effect. This can be done with a video editing package, but it is typically an advanced feature that is tough to find in some of those tools. Presio makes it quite easy. See how in this screencast:

