Therefore, while you can use the above approaches, if you truly need to manage playback speeds then either download Apple’s older QuickTime 7 player, or use a third-party option like VLC. That being said, this ability is present in other media players as it was in QuickTime 7, where you can use hotkeys or a slider control to set the playback speed natively. Unfortunately this means you will need to use another program (Script Editor, or the Terminal, or perhaps Automator or even a compiled AppleScript Application using this code) to control your movie playback speed in QuickTime X, but technically it is doable. Since this is a one-line script, you can easily run it from the Terminal as well, since AppleScript lines can be interpreted using the “osascript” command (note even though it may wrap here, all of this is on one line): osascript -e 'tell application "QuickTime Player" to set rate of document 1 to 0.5'
The back and forward controls in QuickTime adjust the speed from 1x on up.
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