Use the Resize menu in the A/V Tools to change
            the resolution, aspect ratio, scan mode, framerate or format of
            a clip as well as its frame bit depth. 
         
         To access the Resize menu:
         
         
            - From the A/V Tools box, select and enable
               Video.
            
- Click Resize to activate the Resize tool.
            
- Select the clip that you want to resize.
            
- Select a destination for the resized
               clip.
            
- Set the resize settings using the Resize
               menu.
               See 
                           Resize Settings.