By Jennifer Smith, Christopher Smith, Fred Gerantabee

The frame rate, which plays an important part in the performance and appearance of movies in Adobe Flash Creative Suite 5, dictates how many frames are played back per second by Flash Player, in turn affecting the speed and smoothness of your animations.

You can modify the frame rate in one of these three ways:

  • Choose Modify→Document.

  • With nothing on the stage selected, use the Property inspector. You see your document properties.

  • Click and drag over the frame rate value displayed at the bottom of the Timeline panel.

The frame rate is based completely on the result you’re trying to achieve. Although the default frame rate in Flash is 24 frames per second (fps), you may also want to consider a rate of 30 fps. It’s consistent with broadcast and digital video frame rates and should provide a good starting point for smooth, consistent animation. To keep this topic in perspective, remember that a film projector (like the one at your local movie theater) runs at 24 fps.

If you want to increase the overall speed and smoothness of an animation, you can try increasing the frame rate gradually until you find one that’s right for you. Flash can support frame rates of as much as 120 fps.

Changing the frame rate affects the playback of your entire movie. If you’re trying to adjust the speed of a specific animation, consider modifying the tween itself.