QuickTime Movies In Cocoa

Cocoa represents QuickTime movies as NSMovie objects. Any QuickTime-readable movie can be loaded into an NSMovie object; the movie data can be read from a pre-existing QuickTime movie pointer, a URL, or a pasteboard. The NSMovie class does not define methods for manipulating the movie data directly, but you can obtain a pointer to the data (with the QTMovie method) and then use the extensive QuickTime APIs. Primarily, NSMovie is used to display a movie inside an NSMovieView.

An NSMovieView displays an NSMovie object in a frame and provides methods for playing and editing the movie. With NSMovieView, you can control the sound volume, play speed, looping mode, and movie controller visibility. With the standard QuickTime movie controller visible, the user can play the movie, set the volume, reposition the play head, and make selections. (Note that the movie controller operates directly on the movie, bypassing the NSMovieView methods.) If the movie is editable, the user can also perform copy and paste operations on the movie. (See “Archiving NSMovie Objects” for details on saving a modified movie to a file.)

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Last updated: 2002-11-12

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