You can change your project's format or frame rate from the File menu.
For example, if you change from a square format to a rectangular format, you will need to fill the sides of the screen.
To change your project's format:
|1.||Select File > Animation Properties.|
The Animation Properties dialog box opens.
|2.||In the Frame Rate field, type the new frame rate for your project.|
|3.||In the Camera Size field, type the new format for your project.|
|4.||If you want this format to be used each time you create a new project, click Set As Default.|