The term resolution is the amount of information in a media asset measure by height and width in pixels. The more "pixels" the higher the quality of the picture.
Common Resolutions
CRT Televisions | 720 x 480 |
Older LCD Screens | 1024 x 768 |
720p Screens (HD) | 1280 x 720 |
1080p Screens (HD) | 1920 x 1080 |
4K Screens (UHD) | 3840 x 2160 |
The number of pixels high relative to the number of pixels wide is the aspect ratio.