Once you have finished editing, you can save the movie. It is best to use the same video settings from start to stop of the project. However, you can also mix settings and save your final video in a different setting if you have reasons for doing so. For example, you might export a video in a smaller size with more compression for placement on the web. You could even save multiple copies in different sizes, one for the web, one for showing from your computer in class, and one for long-term storage on a DVD.