Right arrow
Forward one frame
Shift+right arrow
Forward 1 second (30 frames in NTSC, 25 frames in PAL)
Left arrow
Back one frame
Shift+left arrow
Back 1 second (30 frames in NTSC, 25 frames in PAL)
Up arrow
Previous edit
Down arrow
Next edit
J
Play backward (repeated presses of J play backward faster)
K or spacebar
Stops playback
L
Plays forward (repeated presses of L play forward faster)
Spacebar
Toggles playback forward on and off
Shift+Spacebar
Playback backward
L+K
Play forward in slow motion
J+K
Play backward in slow motion
Home
Go to beginning of medium
End
Go to end of medium
Opt+P
Play every frame regardless of whether it is rendered