Final Cut Pro – A Faster Way to Preview an Edit
This keyboard shortcut makes it easy to preview an edit point.
Here’s a fast way to preview an edit point:
Press the backslash key — it’s right above the Return key.
Watch how the playhead backs up a few seconds, plays through the current location of the playhead, stops a few seconds afterward, then repositions the playhead back to its original position.
Extra credit: You can change the amount of time it backs up, or plays through by changing the settings in the Final Cut Pro > User Preferences > Editing tab.
Courtesy of Larry Jordan