Choose File➪Publish Settings to access the Publish Settings and to take a global approach to the control of audio output quality. Then choose the Flash tab of the Publish Settings dialog, shown in Figure below. This dialog has three areas where the audio quality of an entire Flash movie can be controlled globally.
The Flash tab of Publish Settings has three options to control audio quality.
The Flash tab of the Publish Settings dialog has three options for controlling audio quality:
The Set options
Audio Stream and Audio Event have individual compression settings, which can be specified by their respective Set button options. If you click ether Set button on the Flash Tab, the same Sound Settings dialog appears it is identical for both Audio Stream and Audio Event, which means that the same options are offered for both types of sound. The Sound Settings dialog, shown in various permutations in Figure below, displays numerous settings related to the control of audio quality and audio file size. The type of compression chosen governs the specific group of settings that appear.
The Sound Settings dialogs
The specific options that are available in the Sound Settings dialogs are always related to the compression, or audio-encoding scheme, selected in the Compression drop-down menu. That’s because different compression technologies support different functionalities:
mp3 bit rate quality
As a general rule, if you use the Publish Settings to control audio export globally, we recommend choosing MP3 at 64 Kbps. This will result in moderate to good sound quality (suitable for most Flash projects), and the ratio of file size-to-quality will give reasonable performance.
Supporting the MP3 Player
Although this is becoming less of an issue with the release of Flash 5, it may still be important to consider that MP3 is not supported by Flash 3 (or earlier) players. There may be a number of users in your audience that haven’t upgraded their Flash Player plug-in to version 4, much less to version 5. Although, as Flash developers, it would be nice to assume that your audience will eventually upgrade, it’s more realistic, and therefore advisable, to consider implementing a transitional solution. For example, you could provide both a Flash 3 movie with ADPCM-encoded audio and a Flash 5 movie with MP3-encoded audio. Include information on the splash page about the benefits of the Flash 5 player: reduced download time and increased audio quality. This is an incentive for you users to upgrade. You’ll also want to provide a link to Macromedia to download the new plug-in. Another, more “invisible” solution is to add intelligence to your splash page with a “plug-in detection” script that automatically serves users the movie that corresponds to the version of the Flash Player they have installed.
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