4:3

Standard aspect ratio used for television; one third wider than it is high (1.33:1). See also aspect ratio. 

Aspect ratio of 4:3, it is found with traditional CRT monitors, digital cameras and TVs. 

For every 4 units of width, there are 3 units of height, creating a rectangular shape. 

An image sized at 1024 x 768 pixels or 8 x 6 inches fits a typical 4:3 ratio. 4:3 ("Four-by-Three" or "Four-to-Three") aspect ratio can help to improve your video projects.