Movie properties are settings that affect an entire movie. Unlike General Preferences, they affect only the movie that's currently being worked on. When you save a movie, its properties are saved with it.
As with General Preferences, it's a good idea to leave these settings at their default values until you get more experience with the program.
Open an existing movie or create a new movie.
Choose Modify > Movie > Properties to display the Movie tab of the Property Inspector (Figure 1.10).
Adjust settings as necessary.