Click a transition icon to choose one of the transition types. (A notice will display for transitions that are not configurable). Click on a transition icon to see a demonstration of the transition action. (The transition keeps performing until your move the mouse off the icon.) Configure the transition properties (width, height, color, angle, opacity, etc.) using the controls displayed on the right side of the Transition Inspector window.
Click the Preview button to preview the transition in your clip on the canvas. You can also set the transition duration value in seconds in the duration field at the bottom of the Transition Inspector window.
Show the Transition Groups area by clicking the arrow in the bottom left corner of the window.(click it again to hide them). Click
All to display all available transitions.
When you hover over a transition a star appears. Click that star to add the transition to the list of favorites. To remove a transition from your list of favorites, click the star again. Click
Favorites to display a list of your most used transitions.
Click Built-in OS X to display transitions that are built into the operating system.
