>>PPI measurements d


>>PPI measurements do not apply to digital video. There are no PPI
measurements taken during a video screenshot. Video is measured with
the samewidth and height dimensions, whether the video is on a 15″ or
a27″ monitor.<<

Actually, my point is that this assumption is incorrect. While PPI is usually refered to as the resolution of an image another term for it is pixel density. PPI is a measurement of a display device, it is used to describe the number of pixels (horizontally and vertically) in a one inch area of the screen. So a 1080P video signal would have one PPI when displayed on a 42inch television and another if displayed on a 20inch screen. Analog televisions don’t use PPI but LCD, Plasma, and projectino tvs do.

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