This video explains how to animate changes in the material or colour of an object, how to animate lights and also how to animate cameras.
This tutorial explains how to delete or crop content that is outside the stage area in an Adobe Flash CS6 animation. You can watch the video on YouTube here or view it below.
Note: The purpose of this tutorial is to explain how to crop objects outside the stage if you want to clean up any clutter around your animation. In the example above, you might later on want to make the clouds move using a motion tween. If that is case, then it is not a good idea to crop the clouds.