Final Cut Pro X is a macOS video editing application by Apple.

Quick Reference

Keyboard Shortcuts

KeyAction
SpacePlay/Pause
Cmd-BSplit
Option-[Delete from playhead to beginning of clip
Option-]Delete from playhead to end of clip
HReverse (multiple presses to control speed)
KForward (multiple presses to control speed)
JPause
,Move selected clip back one frame
.Move selected clip forward one frame
ASwitch to Select (default) tool
Option-WAdd gap
Option-FAdd freeze frame
Option-VPaste to secondary track
MSet mark
Ctrl-‘Next mark
Ctrl-;Previous mark
Cmd-Ctrl-1Toggle browser
Cmd-`Toggle left sidebar
Cmd-5Toggle Effects browser
Cmd-Ctrl-5Toggle Transitions browser