The aspect ratio of your television is the relationship between the width and the height of the image displayed. Each aspect ratio is shown as two numbers in an x:y format. For standard definition televisions and older computer monitors, the ratio is 4:3. The aspect ratio for widescreen high-definition viewing is 16:9. You can change the ratio on your TV by going into settings and adjusting the ratio under the picture category. Doing so will keep the image from appearing stretched or keep the image from cutting off.
Benefits of an optimized aspect ratio