What does the term 'aspect ratio' refer to?

• A. The ratio of width to height of the video frame
• B. Frame rate per second
• C. Color depth
• D. Resolution

Answer: (A)

Aspect ratio describes the width-to-height relationship of the video frame—the shape of the image. It focuses on how wide the picture is relative to its height, not how many pixels there are, how smooth the motion runs, or how many color bits are used. For example, 16:9 is a wide shape common on modern screens, while 4:3 is more square. This matters when you display content on screens with different shapes, as a mismatched ratio can produce black bars or cropped edges. Frame rate per second (how many frames pass each second) and color depth (bits per color) deal with motion and color quality respectively, and resolution refers to the total pixel count. So the width-to-height relationship is what aspect ratio measures.