With the Image Saver class you can save JPG or PNG images directly from your flash file. Here are the feature as the author describes them:

• Save a MovieClip, Sprite, Shape, Bitmap, Textfield or other kinds of displayObjects.
• It doesn’t matter where or how your object is positioned on the stage, it gets the right bounds.
• Never worry about bytearray’s / encoding anymore.
• Save your displayobject as JPG or PNG (using Adobe’s encoders

Very handy!

Script Image: