MacMost Now 471: iMovie Picture-In-Picture, Side-By-Side and Cutaways
Learn to use three different types of video layering in iMovie 11. You can cutaway to a second video and then cut back, even making the second video semi-transparent. You can include a video as picture-in-picture with borders and a drop shadow. You can also put two videos side-by-side. These features also work with still photos.