You can export animations as video animation files or as series of image file, one file for each frame per second of your presentation. Export an animation using the Export > Animation menu item in the File menu.
Tip: Use the Animation Export feature when you need to provide a presentation of your model to a client who does not have SketchUp or the SketchUp viewer. Or, export a video animation for post-processing in another presentation software package. Use SketchUp for simple presentations or when the customer has the SketchUp viewer.