User talk:Smilemac

—smilemac

The comparison for 1080/25p,50p and 50i

The same is that all resolutions are 1920x1080.

The differences are 1) the 25p samples once per frame; 50p and 50i all are twice per frame. 2) But the 25p and 50p are all real 1080 lines for vertical resolution, and the 50i is only 540 lines for vertical resolution. 3) Because 50i samples twice per frame, so for the case of much motion in video, the display will look more smoothly and the experience to viewers would be better than 25p, which only smaples once per frame and would look flashing in the case of much motion.

So the best is 50p.

Of cause, because 1080/24p is the international exchange format for programme and much production system are 25p or 50i, according to the theory of encoded video can not be better than source, 50i should be the best practical format under such conditions.

The same theory can apply to the 60i/30p/60p.