- Aspect ratio is the ratio between width and height of the image, video and the screen.
- It is represented as width:height. Ex: 4:3, 16:9, 21:9.
- 4:3 means the width of the screen is almost equal to height.
- 16:9 means the width of the video or image is almost double to its height.
- 21:9 is cinematic range of ratio its having wide angle.