Like other modules, transition modules are used to generate the actual transition media items that users drag from the Browser into the Timeline. Each property can either be made editable or predefined, allowing many transition media items to be generated from a single transition module.

Core transition modules include Crossfade, which simply fades the next clip into the previous one, and Cube, which scales both clips over time in one of the four directions to mimic a rotating cube.

All transition modules have a length property which determines the amount of time they are in effect. If this becomes longer than half the length of the previous clip its last frame is repeated to fill any gap, causing the video to appear to freeze at some point during the transition. This is also true of the next clip, which will repeat its first frame to fill a gap.

Transition modules also all have a freezestart property that, when set to true, will cause the transition to wait until the last frame of the previous clip before starting. This frame is then used throughout the transition, making the video appear to freeze. The freezeend property works the same way with the next clip.