Enter and exit full-screen mode in QuickTime Player
01/20/2012
In QuickTime Player, press Command-F to enter full-screen mode, and press Command-F again (or press Esc) to exit.
Rotate a movie clip in QuickTime Player
01/14/2012
In QuickTime Player, to rotate a movie clip, choose Edit> Rotate Left, or Edit> Rotate Right.
Quickly turn the volume up or down in QuickTime Player
12/28/2011
In QuickTime Player, press Option-Up Arrow or Option-Down Arrow to quickly turn the volume up or down to its maximum or minimum level.
Increase or decrease the size of a movie in QuickTime Player
12/12/2011
In QuickTime Player, press Command-Plus (+) or Command-Minus (-) to increase or decrease the size of a movie.
Play or pause all open movies in QuickTime Player
12/05/2011
In QuickTime Player, press Command-Return to play or pause all open movies.
Insert a movie at the end of a movie in QuickTime Player
11/11/2011
In QuickTime Player, to insert another movie at the end of your current movie, choose Edit> Add Clip to End, then locate the movie to add and click "Choose media".
Split a movie into clips in QuickTime Player
10/24/2011
In QuickTime Player, to split a movie into clips, drag the playhead in the timeline to the location where you want to split your movie and choose Edit> Split Clip.
Extract audio from a movie in QuickTime Player
10/14/2011
In QuickTime Player, to extract just the audio from a movie, and none of its video, choose File> Export and select Audio Only from the Format pop-up menu.
Keep a movie visible in QuickTime Player
09/23/2011
In QuickTime Player, to keep the selected movie visible over all other windows, even when QuickTime Player is in the background, do View> Float on Top.
Flip a movie clip in QuickTime Player
09/05/2011
In QuickTime Player, to flip a movie clip, chose Edit> Flip Horizontal, or Edit> Flip Vertical.
Jump to the next or previous chapter in QuickTime Player
07/29/2011
In QuickTime Player, when viewing movies with chapters, press Shift-Command-Right Arrow or Shift-Command-Left Arrow to jump to the next or previous chapter.
Show the time remaining in a movie in QuickTime Player
07/14/2011
In QuickTime Player, click the total playback time in the bottom right corner of the movie playback controls to show the time remaining in the movie.
View a movie full screen in QuickTime Player
05/31/2011
In QuickTime Player on a Mac with a Multi-Touch trackpad, pinch apart over a movie while it is playing to view it full screen.
Fast-forward or rewind a movie in QuickTime Player
05/22/2011
In QuickTime Player, press Command-Right Arrow or Command-Left Arrow while playing a movie to cycle through each fast-forward or rewind speed.
Change the quality of recordings made with QuickTime Player
03/16/2011
In QuickTime Player, before starting a movie, audio or screen recording, click the arrow button in the controller to set the recording quality.
Change the playback speed of a QuickTime movie
06/03/2010
When playing a movie in QuickTime X on a Mac with a multi-touch trackpad, do a two-finger swipe across the movie to change its playback speed.
Exclude silent portions of QuickTime movies when trimming
04/07/2010
When trimming a movie using QuickTime Player in Snow Leopard, do Edit>Select All Excluding Silence to exclude beginning or end portions containing no sound.
Adjust the playback speed of a QuickTime movie
03/30/2010
While playing a movie in QuickTime Player, click the forward or reverse arrows to play it at 2X, 4X or 8X speed. To resume normal speed, click the Play button.
Jump to the beginning or end of a movie in QuickTime Player
03/04/2010
When playing a movie with QuickTime Player in Snow Leopard, hit Option-Left or Option-Right Arrow on your keyboard to quickly jump to the beginning or end.
Show audio when trimming video with QuickTime X
01/02/2010
When trimming a video clip with QuickTime X in Snow Leopard, press the Option key to show the audio waveform in the timeline.
