Use the Burn Letterbox tool in the FX menu to burn a letterbox format into a clip. You set the Letterbox options for the clip using the Player Letterbox controls. When you select a clip with letterbox formatting, Burn Letterbox detects the format.

To burn in letterbox:

1. Set the Letterbox options for the clip in the Player.
2. Select FX from the A/V Tools box, and then click BurnLetterbox.
3. Select the clip on which to apply the letterbox format.
4. Select the destination in the Source Area or Record Area for the letterbox clip.