Preview a Flash CS5 Movie
When you are working in Adobe Flash Creative Suite 5, it is always a good idea to check your Flash CS5 movie’s speed and size by previewing it. Previewing gives you an accurate depiction of how your animation will look and perform in Flash Player. In certain cases, such as when working with movie clips, previewing your movie is necessary to see a complete picture of your work.
To view a movie in Preview mode, choose File→Publish Preview→Flash or use the keyboard shortcut Ctrl+Enter (Windows) or @@cmd+Return (Mac).
This step creates a .swf file from your current authoring file and displays it immediately in Flash Player. Previewing is a helpful way to see how your movie will appear to users and can highlight any potential snags.
Ultimately, the final viewing environment for most Flash movies is on the web in a browser, such as Internet Explorer, Safari, or Firefox. Part of what Flash creates for you at publish time is not only a finished .swf but also an HTML (HyperText Markup Language) page to contain your movie. To see how your movie looks as viewed in a browser, choose File→Publish Preview→Default (HTML). Your default system browser launches and presents your movie in a web page, just as users will see it.