MacOS - Enable/Disable autoplay of videos under Quicktime

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To enable the autoplay of movies under Quicktime:
  • Open a terminal and type the following command:
    • defaults write com.apple.QuickTimePlayerX MGPlayMovieOnOpen 1
  • To disable it:
    • defaults write com.apple.QuickTimePlayerX MGPlayMovieOnOpen 0
Jean-François Pillou

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