> Creating Transitions
> Transitions are applied to a clip to create a smooth progression into, out of, and between clips. Transitions can only be added to clips in the same track.
> The default duration of a transition is one second. You can expand or contract the duration by moving the thin vertical line separating the transition from the main part of the clip. You may need to zoom in on the timeline to make it easier. As you adjust its duration, the time value displays in real time.
> Note: You can also change the default duration of transitions in the ScreenFlow > Preferences >Timeline pane (Timeline Pane).

> • | Adding Transitions

> • | Configuring Video Transitions

> • | Configuring Audio Transitions