Solved 420p?

What resolution is mostly 420p????????

Older video game console and home computers generated a nonstandard NTSC or PAL signal which placed both fields on top of each other.[1][2] This is equivalent to 240p and 288p respectively. Conversely, the FCC forbade TV stations from broadcasting in this format. The Video CD format was introduced on such a console (CD-i), and it likewise uses a progressive LDTV signal (352×240 or 352×288), which is half the vertical resolution of SDTV.
With the introduction of 16-bit game consoles, 480i was supported for the first time, but rarely used due to limited memory and processing power. Thus, 240p remained the primary format used through the Playstation era.
More recent game systems tend to use only properly interlaced NTSC or PAL in addition to higher resolution modes, except when running games designed for older, compatible systems in their native modes. The PlayStation 2 generates 240p/288p if a PlayStation game calls for this mode, as do many Virtual Console emulated games on Wii. Recently YouTube also supports Low Quality videos running on 240P. YouTube's standard for normal quality is 360P. Enhanced Definition starts at 480p, which can be scaled up... high definition, 720p, 1080p. The more vertical lines to scan equals more detail. And yes, there is much more information about the subject at wiki...

^^^ 480 is not HD. And DVDs are 480, there is no mention of 420 in any standard I can see.

480p - Wikipedia, the free encyclopedia

Sometimes P just means the end number of a dimension.

rmw020 said:

Sometime P just means the end number of a dimension.

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No, the "p" always stands for Progressive scan when used in this context. An "i" always stands for Interlace scan when used in this context.

Yes, but if you notice when it comes to HD TV's on the market, 720p and 1080p refer to dimensions of 1280*720 and 1920*1080. You notice that the 720 and 1080 are the last numbers.

rmw020 said:

Yes, but if you notice when it comes to HD TV's on the market, 720p and 1080p refer to dimensions of 1280*720 and 1920*1080. You notice that the 720 and 1080 are the last numbers.

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Right....and?

rmw020 said:

Yes, but if you notice when it comes to HD TV's on the market, 720p and 1080p refer to dimensions of 1280*720 and 1920*1080. You notice that the 720 and 1080 are the last numbers.

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Easy marketing identification for consumers.

Consumer sees:

720 = 720P

1080 = 1080i/P

Like Logicearth said, the "P" just designates the type of video.

When you see 1080P it means 1920x1080 progressive scan.
When you see 1080i it means 1920x1080 Interlaced.


In terms of Video, 420P just means a Progessive scan thats 420P in height.

Its also very odd, and is not standard.

480 (DVD) 720 & 1080 (HD) are the standards. Anything other than that has been altered or resized.

Like, if you see something that says HD at 1920x800 .... thats NOT HD and has been altered.

rmw020 said:

What resolution is mostly 420p????????

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Hi rmw020
So You wanted to know - Simple, the 480 refers to the number of lines (from top to bottom) displayed on the screen.
With 480p, the display device displays the full 480 lines, that compromise the complete image, each 1/60th of a second.
With 480i, the display device alternates between displaying 240 odd numbered lines of the image (Field1) and 240 even numbered lines of the image (Field2). Each field of 240 lines, which is only half of the image, is displayed each 1/60th of a second, the two "frames" forming a complete image every 1/30th of a second.

And, of course, the p stands for "progressive" and the i stands for "interlaced".
The progressive video therefore displays' video information, for your eye, at twice the rate of interlaced video, making for more solid, clearer, and sharper appearing images.

And yes, 720p & 720i and 1080p & 1080i work the same way except that we have more lines of video from the top to the bottom of the screen.