Learn how to create customised split screens in Final Cut Pro X using the advanced features of the Draw Mask effect. Working with animated shapes and bezier curves you can create intricate split screens that you can control perfectly in synch with your video. You will also learn how to copy and paste a split screen mask from one clip to another.
You might also enjoy this video which shows you how to create a basic split screen using the mask & scale options in Final Cut Pro X.