posted on Jul, 20 2012 @ 10:41 AM
Interlaced scan-based images use techniques developed for CRT (Cathode Ray Tube) TV monitor displays, made up of 576 visible horizontal lines across a
standard TV screen. Interlacing divides these into odd and even lines and then alternately refreshes them at 30 frames per second. The slight delay
between odd and even line refreshes creates some distortion or 'jaggedness'. This is because only half the lines keep up with the moving image while
the other half waits to be refreshed.
Interlaced scanning has served the analog camera, television and VHS video world very well for many years, and is still the most suitable for certain
applications. However, now that display technology is changing with the advent of Liquid Crystal Display (LCD), Thin Film Transistor (TFT)-based
monitors, DVDs and digital cameras, an alternative method of bringing the image to the screen, known as progressive scanning, has been created.
Progressive scan differs from interlaced scan in that the image is displayed on a screen by scanning each line (or row of pixels) in a sequential
order rather than an alternate order, as is done with interlaced scan. In other words, in progressive scan, the image lines (or pixel rows) are
scanned in numerical order (1,2,3) down the screen from top to bottom, instead of in an alternate order (lines or rows 1,3,5, etc... followed by lines
or rows 2,4,6). By progressively scanning the image onto a screen every 60th of a second rather than "interlacing" alternate lines every 30th of a
second, a smoother, more detailed, image can be produced on the screen that is perfectly suited for viewing fine details, such as text, and is also
less susceptible to interlace flicker. The primary intent of progressive scan is to refresh the screen more often.
Long short of it yep P is better for watching