1280 * 720 pixels are generally called 720 P, P represents the progressive scan, pixel number 1280 on behalf of the length direction, is 1280 lines of pixels, so progressive scan line is to scan 1280, why it is called 720 P, rather than 1280 P?

CodePudding user response:

A line has 1280 pixels, a total of 720 lines,

CodePudding user response:

reference 1st floor SeanOY response:

a line has 1280 pixels, a total of 720 lines,

I am on mobile phone this screen to understand, because the mobile phone is a portrait, so usually understand line length is 1280 pixels, is 720 pixels wide, so progressive scan first reaction is to scan line 1280.
But it is relative to the row and column, it is estimated that scan is according to the 720 lines to sweep, so called 720 p

CodePudding user response:

Small vertical resolution by him

CodePudding user response:

In front of the mobile phone use 1280 * 720 resolution, computer, television, video and so on already use this specification the transverse resolution of file coding, transmission, display, mobile phone, but is follow the traditional way

CodePudding user response:

P: means progressive-scan
720 p image is the aspect ratio of 16:9, can calculate: x/720=16/9, x=1280, namely the origin of 1280 * 720