QuickTime Kit Programming Guide - filibeto.org

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C H A P T E R 4 Adding New Capabilities to the QTKitPlayer Application In a short series of steps, you’ve significantly extended the capabilities of your QTKitKPlayer application. Now you’re ready to enhance the media player by adding the capability to stream audio and video. That’s explained in the next chapter. 78 The Completed Project 2005-11-09 | © 2004, 2005 Apple Computer, Inc. All Rights Reserved.
C H A P T E R 5 Extending the QTKitPlayer To Stream Audio and Video If you’ve been working diligently through the code examples in the last two chapters, you’ve no doubt advanced your knowledge of how to extend your QTKitPlayer application with the tools available in Xcode and Interface Builder. The goal has been to enhance the functionality of the media player by tapping into the power of the QTKit framework and in the process learn by doing. In this chapter, you’ll jump into another level of programming skill by adding the capability of streaming audio and video in your application. Streaming, of course, is not the same thing as downloading a QuickTime movie file. Note: Streams, which can originate from a live source or stored video on a server, are data packets that are assembled into sound and video, displayed briefly, then discarded. No movie file is created on the user’s computer. The way streaming works is that a streaming server responds to requests for streaming movies, and then transmits those streams to users in response to requests. The requests are handled using RTSP (Real-Time Streaming Protocol); streams are sent over the Internet using RTP (Real-Time Transport Protocol). The URL for a streaming movie starts with the RTSP protocol identifier and looks like this rtsp://YourStreamServer.com/YourPath/YourMovie.mov After you complete the steps in this chapter, your QTKitPlayer application will be able to play audio and video streams in real time over the Internet. You’ll be able to open a streaming movie by choosing Open URL from the File menu and entering the URL string, as shown in Figure 5-1. Figure 5-1 An Open URL dialog in the completed QTKitPlayer application Clicking OK launches an Untitled QTKitPlayer movie window with a big blue Q at the center, as shown in Figure 5-2. 2005-11-09 | © 2004, 2005 Apple Computer, Inc. All Rights Reserved. 79
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Contents Introduction Introduction
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Figures and Tables Chapter 1 The Qu
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F I G U R E S A N D T A B L E S Fig
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I N T R O D U C T I O N Introductio
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C H A P T E R 1 The QuickTime Kit A
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C H A P T E R 2 Building a Simple Q
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QuickTime Kit Programming Guide - filibeto.org

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