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Using sprite tracks


    A sprite track lets you apply actions and set individual mouse states to the track's image objects, called sprites. Sprites let you give viewers an interactive experience through objects that affect a behavior, such as jumping to a different Web page.

    Like a video track, a sprite track consists of a sequence of frames that play back at a certain frame rate. Unlike a video track, which is a continuous stream of pixel images, a sprite track relies on a pool of images that are stored with its first keyframe. The advantage of a sprite track is that subsequent frames need not contain the pixel image itself, but simply a reference to an item in the image pool. As a result, this type of movie is much smaller in file size than pixel-based video, thus making animations load faster.

    Creating sprites requires several steps: First you add the sprite track and set sprite track properties. Then you import images into an image pool to make them available to you when you are adding individual sprites. Finally, you set behaviors and actions on the sprites.

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