Resolution is defined as the ratio between the number of pixels into which the screen is divided, both vertically (height) and horizontally (width). For example, if we have a video resolution of 1920×1080, it means that it has 1920 pixels horizontally and 1080 vertically.
This term is fundamental when determining the quality of a video, since it measures the precision of the images within it. If we compare two fragments with fixed size and the same content, the one with a higher resolution will have more and, therefore, the image quality will be higher.
Let’s take a look at some of the most common resolutions:
- 720P. Contains 720 pixels vertically and, generally, 1280 horizontally.
- 1080P. Contains 1080 pixels vertically and, usually, 1920 horizontally.
- 2K. Contains 1,440 pixels vertically and, frequently, 2,560 horizontally.
- 4K. Contains 2,160 pixels vertically and, typically, 4,096 horizontally.