Spinner on Green Screen Sometimes you want to create digital effects for a movie, but... you just do not have any fancy software to create your video effect. Well, if you have a mac, you might be able to create something that may meet your needs... in Keynote and iMovie. Basic Mac apps from Apple. Here is my Video Tutorial, broken down into small parts. There may be other applications for doing this method. If you have ideas about how you might use this, add it to the comments section!