Component Video Question

[Polypro]

I've got a Viewsonic N2750W 27" LCD...it runs 1280x720 native. There are two sets of component inputs...one set is marked YCbCr and the other is YPbPr. What is the difference? Which ones should a 6600 be hooked up to?

Thanks,

P

[stanger89]

Usually, YCbCr means 480i component, and YPbPr means HD component (eg 'P' for 'P'rogressive). You'll probably want to hook up to the YPbPr input.

[Polypro]

Thanks Stanger.

P

[krasev]

Originally Posted by stanger89

Usually, YCbCr means 480i component, and YPbPr means HD component (eg 'P' for 'P'rogressive). You'll probably want to hook up to the YPbPr input.

YCbCr - digital signal and
YPbPr - analog counterpart of YCbCr

[mikejaner]

Originally Posted by krasev

YCbCr - digital signal and
YPbPr - analog counterpart of YCbCr

This is wrong. Both are Color spaces, and the inputs on his TV are both Analog.
http://en.wikipedia.org/wiki/YCbCr
http://en.wikipedia.org/wiki/YPbPr

[Taddeusz]

Originally Posted by mikejaner

This is wrong. Both are Color spaces, and the inputs on his TV are both Analog.
http://en.wikipedia.org/wiki/YCbCr
http://en.wikipedia.org/wiki/YPbPr

Straight from the first paragraph of the YPbPr Wikipedia article:

YPBPR is the analog version of the YCBCR color space; the two are numerically equivalent, but YPBPR is designed for use in analog systems whereas YCBCR is intended for digital video.

[mikejaner]

Originally Posted by Taddeusz

Straight from the first paragraph of the YPbPr Wikipedia article:

Correct, these are color spaces for analog type systems like CRT tubes and digital systems like LCD screens, not analog versus digital inputs.

[Taddeusz]

Originally Posted by mikejaner

Correct, these are color spaces for analog type systems like CRT tubes and digital systems like LCD screens, not analog versus digital inputs.

Not entirely true. HDMI supports both full RGB and YCbCr colorspace signals. I know this for fact as the HD100 output used to be RGB only. The firmware was later changed to support YCbCr if the television reported it as supported. My cheapo HDTV always applies overscan to a YCbCr source with no way to disable it. RGB sources are 1:1 pixel perfect at 1080p.

All this is off topic so I'll stop there.

[stanger89]

Well then Wikipedia is wrong (shocker), the term YCbCr predated digital video. If you go back to the days before HD, you would see component outputs labelled "YCbCr". When HD and "Progressive" video came around outputs capable of progressive (vs interlaced 480i) became labeled "YPbPr" (P for Progressive), to distinguish them from the SD only inputs.

OK, wrong is a strong word, YCbCr is also used to describe digital component video, but it's not true that (or not as simple as) "YCbCr is digital, and YPbPr is analog".

[mikejaner]

Originally Posted by stanger89

Well then Wikipedia is wrong (shocker), the term YCbCr predated digital video. If you go back to the days before HD, you would see component outputs labelled "YCbCr". When HD and "Progressive" video came around outputs capable of progressive (vs interlaced 480i) became labeled "YPbPr" (P for Progressive), to distinguish them from the SD only inputs.

OK, wrong is a strong word, YCbCr is also used to describe digital component video, but it's not true that (or not as simple as) "YCbCr is digital, and YPbPr is analog".

Right, I am just correcting the perception that any component video connectors carry digital information. They do not. Anything digital happens after the analog signal is recieved.
http://en.wikipedia.org/wiki/Component_video
To build on what you said YCbCr (colorspace) was used by Digital interfaces like SDI and Firewire for some old camcorders, studio switching equipment etc..., but nothing like the connectors we are talking about.

These two sets of connectors just mean that one of them is only capable of the really old Pre-HDTV'ish Progressive Scan 480P type of TV sets some people had.

[Tiki]

Originally Posted by krasev

YCbCr - digital signal and
YPbPr - analog counterpart of YCbCr

So, why are we stirring up a 9 year old post

[Skirge01]

Originally Posted by Tiki

So, why are we stirring up a 9 year old post

What better time to necro-post and raise from the dead a mummified thread on an undead forum?