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Chapter 12. Real Media > RealFlash Optimization Kit

RealFlash Optimization Kit

You can download this kit free from Macromedia. The kit includes the RealFlash Bit Rate Calculation Spreadsheet, which you can use with Microsoft Excel and Microsoft Word to calculate optimum compression for given bandwidths. This spreadsheet uses the Movie Report data created by the Shockwave Flash exporter when you save the Shockwave Flash file. It contains information about the data rate for the overall animation, as well as for particular frames of animation, allowing you to compensate for data spikes in the animation. You can use the information provided by the spreadsheet to determine the optimum data rates and buffering values to apply in the swftune utility.

The objective of optimizing playback settings is to improve performance and quality for the user. One of the first things that you have to tackle is whether audio or animation quality is your priority, because each makes its own bandwidth demands. Following is RealNetworks' table of typical data rates for different purposes:


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