Mac OS X Unleashed

Mac OS X Unleashed

By John Ray and William C. Ray

QuickTime

The second layer of the OS X foundation is the imaging layer—these are the tools that higher-level operating system applications (like those you use daily in Mac OS 8 or 9) can call on to create multimedia presentations or render three-dimensional images.

The first of these tools is the QuickTime API. For many people, QuickTime is nothing more than a brushed aluminum window that occasionally plays a movie or song.

QuickTime, however, is far more than a movie or MP3 player. It forms the heart of all multimedia operations in Mac OS X. Any application using QuickTime can transparently support reading or writing dozens of image file formats, including:

In addition, QuickTime also supports audio and video standards such as

By employing QuickTime in applications such as the Finder, suddenly an entirely new capability is added to the system. Figure 1.5 shows the new OS X Finder's Info window. Unlike previous versions of the Mac OS, file information now includes a full preview of any media that QuickTime supports—from still images to music and video.

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Figure 1.5 Showing the information of a file now includes a preview of QuickTime- supported content.

Although best known for its capability to handle movie and audio formats seamlessly in the operating system, QuickTime also includes features such as QuickTime VR. QuickTime VR allows the creation of three-dimensional panoramic models that can be linked together to create entire 3D worlds. If you're already using Mac OS X, you can view several sample QuickTime 5.0 VR movies at http://www.apple.com/quicktime/preview/gallery/.

From the perspective of the Internet service provider, QuickTime supplies a robust and scalable streaming media platform. Capable of adjusting to the user's available bandwidth, QuickTime streaming server can offer thousands of instant-access video streams from a single workstation. Because the QuickTime Streaming Server is distributed under Apple's open source license, it can be installed directly onto OS X, even though the software, by default, comes loaded only on Mac OS X Server.

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