What is Video resolution 480p, 720p, 1080p | What does 'p' stands for?


Video resolution 480p, 720p, 1080p. ?

We have known 'resolution' term since we are using computer or mobile phones, but do we really know what is resolution? What are 480p, 720p & 1080p? What does 'p' really stands for? Do you think 480p means 480 pixels? Let's find out.

Before answering all the questions let's talk about video resolution:

Video resolution is the number of distinct pixels in each dimensions (horizontal or vertical) that can be displayed.
It is usually denoted as width x height with the units per pixel. For eg. "1280 X 720" means the width is 1280 pixels and height is 720 pixels.
Video is basically a number of images flashed or displayed rapidly just like in animation. 

The basic resolution shown below: 
  • (640 X 480)
  • (1024 X 768)
  • (1280 X 960)
  • (1366 X 768)
  • (1600 X 1200)
  • (2048 X 1536)

 What does 'p' stands for?

There is a term called "Interlaced scanning". Interlaced scanning displays alternate sets of lines even and odd sets of lines. First even sets of lines are displayed (2,4,6 etc) and then odd sets of lines are displayed (1,3,5 etc.). Each set of lines are displayed for 1/60th second alternatively and this process repeats over and over again. Actually the half of the image is shown in even sets of lines and the other half of the image is shown in odd sets of lines.Because this process happens so quickly we see full image.
P refers to "progressive scanning" or "non-interlaced scanning" is a format of display in which the image is displayed on the screen by scanning each line of pixels in a sequence from top to bottom of the screen. With the help of progressive scanning image is displayed on the screen in a single scan of the all the pixels on the screen. 

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