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:

1. From the A/V Tools box, select and enable Video.
   
2. Click Resize to activate the Resize tool.
3. Select the clip that you want to resize.
4. Select a destination for the resized clip.
5. Set the resize settings using the Resize menu.

   See Resize Settings.