Relative Chroma bandwidth on Component and HDMI outputs

[Movie_Maker]

Hi,
on a typical Component(YPbPr) or HDMI connection of a dvd or bluray player or a/v receiver what is the chroma bandwidth relative to the luminance bandwidth. Is it half or full ? Asked another way - is it 4:2:2 or 4:4:4 ?

[Blue_MiSfit]

HDMI can carry 4:2:2 or 4:4:4, at between 8 and 16 bits.

From Wikipedia:

HDMI can encode the video in xvYCC 4:4:4 (8–16 bits per component), sRGB 4:4:4 (8–16 bits per component), YCbCr 4:4:4 (8–16 bits per component), or YCbCr 4:2:2 (8-12 bits per component)

~MiSfit

[nurbs]

Why does it matter? I mean sure HDMI can do 4:4:4, but all the media are 4:2:0 anyway.

[Movie_Maker]

It matters in upsampling the 4:2:0.
HDMI "can" carry, but is there any standard for audio/video devices (dvd, bluray players, receivers, external audio/video proessors) ?

CRT TVs require 4:2:2 and non-CRT(lcd/plasma) TVs require 4:4:4. And the interface would have to be designed to be compatible with both. So if its 4:2:2 then it means the signal would go through one more upsampling step in a non-crt TV. Depending on the quality of the video processor in the TV it may prove to be a disadvantage.

This would affect component more than hdmi though as hdmi atleast has the possiblity of transmitting 4:4:4 but is it even possible in component ?

[Adub]

Wait, a minute. Show me one video player, DVD or Bluray, that actually upsamples the 4:2:0 signal.

As has already been stated, modern media is transmitted in the 4:2:0 format.

The only reason why hdmi has support for higher if for future proofing (and a few special cases).

There are only a few video processors that upscale to that resolution.

Oh, and this:
...and non-CRT(lcd/plasma) TVs require 4:4:4.
is false. LCD's and Plasma's don't require 4:4:4.

[Movie_Maker]

then what do you think is the CUE(chroma upsampling error) and why is it associated with dvd players ?

NTSC DV is the first 'modern media' that comes to mind that is neither stored nor transmitted in 4:2:0. Its 4:1:1.

Ofcourse it is not 'required' to send 4:4:4 to an LCD or Plasma because they internally upsample to 4:4:4 if you don't.

[neuron2]

NTSC DV is the first 'modern media' that comes to mind that is neither stored nor transmitted in 4:2:0. What have you been smoking? Ever looked at a DVD MPEG2 stream?

[scharfis_brain]

every DVD-Player has to do chroma-upsampling.
Or how shall analogue video be transmitted, if it wouldn't do upsampling?
YUV 4:2:0 is the reason why I patch the MPEG-Streams (DVD) scene-wise for progressive or interlaced to get progressive upsampling for progressive content and interlaced upsampling for interlaced contents.
(This also helps letterboxing (ie. downscaling)!)

[Movie_Maker]

What have you been smoking? Ever looked at a DVD MPEG2 stream?

maybe you might have mis-understood what I was saying. Yes are there many 4:2:0 sources but I was only referring to NTSC DV which is a 4:1:1. Sure if you convert anything to DVD (mpeg2) it will become 4:2:0!

[neuron2]

Yes, I read it as DVD. Sorry.

[Movie_Maker]

no worries.

still seeking the answer to my original question though...