Killersites Video Tutorial: Video Tutorial on Flash CS3 MovieClips

Using Nested Animations in Movie Clips with Flash CS 3
By: Santo Romano
Tutorial level: Beginner to intermediate Flash users.
Flash version: Flash MX, MX2004, CS2, and CS3

When creating simple animations in Flash, the main timeline is often the best place to position your animations. However, when these animations are repetitive, the best way to handle them is to utilize the movie clip symbol in Flash. Unlike the other symbols you’ll find in the Flash environment, the Movie clip symbol is perfectly suited to handle this kind of work. Rather than creating multiple key frames over and over again, it is much better to nest the simple animation inside of a Movie Clip, and to let it handle most of the work.

Since the movie clip has its own timeline and is capable of storing multiple layers inside of it, it is the perfect microcosm living within your Flash movie. Since the Movie Clip’s time line act independently of the main timeline in scene 1, you can create a simple looping animation with only two frames (or more depending on what you need). This is now nested in the symbol which resides on the main timeline. The difference now, is that you can animate the Movie clip on the timeline, while the looping animation inside of it continuously repeats the two frames. So this compartmentalization of your animation allows you to minimize your work and increases the flexibility of your animations.