About SWF File Format

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Opening FLA File
Changing Text in Flash
Assigning Links in Flash
Changing Images in Flash
Publishing Your Flash Movie
About SWF File Format
Installing Fonts

About SWF File Format

What is SWF?

SWF is the file format used by Macromedia Flash to deliver graphics, animation and sound over the Internet. Almost 95% of web users can view SWF content without having to install a new plug-in, and over 300 million people have downloaded the Flash player.

Introduction to SWF

The SWF (pronounced 'swiff') file format was designed from the ground up to deliver graphics and animation over the Internet. The SWF file format was designed as a very efficient delivery format and not as a format for exchanging graphics between graphics editors. It was designed to meet the following goals:

* On-screen Display�The format is primarily intended for on-screen display and so it supports anti-aliasing, fast rendering to a bitmap of any color format, animation and interactive buttons.

* Extensibility�The format is a tagged format, so the format can be evolved with new features while maintaining backwards compatibility with older players.

* Network Delivery�The files can be delivered over a network with limited and unpredictable bandwidth. The files are compressed to be small and support incremental rendering through streaming.

* Simplicity�The format is simple so that the player is small and easily ported. Also, the player depends upon only a very limited set of operating system functionality.

* File Independence�Files can be displayed without any dependence on external resources such as fonts.

* Scalability�Different computers have different monitor resolutions and bit depths. Files work well on limited hardware, while taking advantage of more expensive hardware when it is available.

* Speed�The files are designed to be rendered at a high quality very quickly.

Publishing SWF Movie

To publish a Flash document, you first select publish file formats and then select file format settings with the Publish Settings command. Then you publish the Flash document using the Publish command. The publishing configuration that you established in the Publish Settings dialog box is saved with the document. The Flash SWF format is selected by default. The HTML format is also selected by default, because an HTML file is needed to display a SWF file in a browser. Tabs corresponding to the selected file formats appear above the current panel in the dialog box (except for Windows or Macintosh projector formats, which have no settings). For more information on publish settings for individual file formats, see the sections that follow.

Choose where to publish the files. By default, the files are published in the same location as the FLA file. To change where files are published, click the folder beside the filename and browse to a different location in which to publish the file.