Project properties overview
When you create a project, you specify a set of project properties—Resolution, Frame Rate, Duration, and so on. You can change most of these properties at any time, even after you add objects to the project.
The Properties Inspector lets you define the most essential attributes of a project. By choosing different parameters, you can accommodate nearly any video or film format you need to output to. These properties are the default settings used when you export your project.
Project background color, as well as how the background color is rendered, is also modified in the Properties Inspector.