Aspect ratio is the width of a picture relative to its height. 4:3 and 16:9 are common aspect ratios. The majority of current NTSC transmissions are 4:3 aspect ratio. Virtually all HDTV transmissions are in 16:9 aspect ratio. Some HDTVs are 4:3 but display 16:9 programming in letterbox format (black borders on top and bottom of screen).
Follow the steps below to adjust the aspect ratio on most TWC Set-Top Boxes. If these instructions don't work for your Set-top Box, please refer to the equipment manual for your model under Digital Cable Boxes.
1. Press SETTINGS.
2. Use left/right arrows to navigate to HIGH DEFINITION.
3. Use up/down arrows to navigate to Aspect Ratio.
4. Here, you can select from the options displayed.