If you're using MXMLC (the MXML and ActionScript 3 stand alone, command line compiler provided with the free Flex 2 SDK) to compile your ActionScript 3 SWFs, you can use the SWF metadata tag to set common properties for your movie. The SWF metadata tag supports 4 properties

• width
• height
• frameRate
• backgroundColor

Example:

ActionScript Code:

package {
[SWF(width="500", height="450", frameRate="24", backgroundColor="#FFFFFF")]
public class MyApp extends Sprite {

}
}

When compiled, the above makes a SWF 500x450 in size with a background color of white and a framerate of 24.