1- What does a video's "aspect ratio" represent?

2- What was the old standard aspect ratio for television screens?

4- A technique using black bars above and below a widescreen video image (16:9 aspect ratio) on a standard television screen is called:

5- The individual video images that make up a moving sequence are called:

6- The television format used in the United States is:

7- The television format used in Lebanon is:

8- To convert from one video compression format to another is also called:

9- A nondestructive compression scheme that retains all the original file information and does not degrade sound or video quality is known as:

10- What is a "codec?"