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HDMI & DVI Vs Component Video

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What is the difference between HDMI & DVI Vs Component Video in terms of picture quallity. Does anybuddy know?
Kenneth Kraly Jr.
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As I was pondering this question, it occured to me - since DVD is a component video source, the component video connection would be outstanding, but does a given DVD player keep the video signal in its digital form for transfer through the digital outputs (DVI/HDMI)? If so, then you would get a purer signal between the player and the display device - i.e no digital->analog conversion inside player to analog->digital conversion inside the display device. (Do any current analog TVs have these digital inputs? I would guess no, but I wouldn't put it past a manufacturer to include one just to impress the customers. )

I guess it would really depend on your actual hardware. For example, people liked getting LD players with S-video outputs because, technically, S-video outputs can produce better video output. However, if you were to buy (a used) LD player today, you are generally better off using the composite video output and having your new TV convert the video to S-video (and subsequently RGB, but that's further along the line than this discussion requires), rather than having a 20+year-old LD comb filter do the conversion.

<span class=“Italics”>MeBeJedi: Sadly, I believe the prequels are beyond repair.
<span class=“Bold”>JediRandy: They’re certainly beyond any repair you’re capable of making.</span></span>

<span class=“Italics”>MeBeJedi: You aren’t one of us.
<span class=“Bold”>Go-Mer-Tonic: I can’t say I find that very disappointing.</span></span>

<span class=“Italics”>JediRandy: I won’t suck as much as a fan edit.</span>

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Originally posted by: MeBeJedi
As I was pondering this question, it occured to me - since DVD is a component video source, the component video connection would be outstanding, but does a given DVD player keep the video signal in its digital form for transfer through the digital outputs (DVI/HDMI)? If so, then you would get a purer signal between the player and the display device - i.e no digital->analog conversion inside player to analog->digital conversion inside the display device. (Do any current analog TVs have these digital inputs? I would guess no, but I wouldn't put it past a manufacturer to include one just to impress the customers. )


DVI is basically digital RGB. DVD players with DVI outputs first convert the video on the disc from its digital component colorspace into digital RGB, and that's what is sent to the display. Enthusiasts who know the difference consider a component > RGB conversion a downgrade because color information is lost. Some people still prefer an analog component video connection over DVI because they feel the color is superior on some displays.

HDMI is compatible with DVI because it handles digital RGB. However, HDMI is also capable of carrying a true digital component signal. Some DVD players with HDMI outputs support digital component output. I can't think of any displays off the top of my head that accept it, but there may be some. There are some high-end scalers that accept digital component via HDMI because it's preferable to work in the original colorspace during deinterlacing/scaling even if the signal is finally converted into digital RGB before being sent to the display.

It's possible to hack the DVI standard to carry digital component signals, but it's messy and non-standard.

And yes, there are many analog displays (CRTs and CRT projection TVs) with DVI and HDMI inputs.
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See The reasion I ask is because my mom is getting me a dvd with HDMI for my brithday.
Kenneth Kraly Jr.
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Cool. Do you have a display with an HDMI input?
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No But I have one with DVI. whould I need dvd-HDMI adaptor?
Kenneth Kraly Jr.
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Originally posted by: kenkraly2004
No But I have one with DVI. whould I need dvd-HDMI adaptor?


If the DVD player only has an HDMI output, you'll need an adaptor. There might be one in the box though, so wait until you get it before you buy one.
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I just order a hdmi to dvi cable from buy.com I will be sending out the money order on friday.
Kenneth Kraly Jr.
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HDMI is simply DVI with audio and a differently shaped plug(No Thumbscrews! Yay!). You CAN run HDCP over DVI. The fact that the signal is digitally encoded means that the image is less prone to noise and crosstalk.

Component takes a video signal and give each part of it its own wire. Brightness(Luma, Y), and Both color channels(Chroma, Cr/Pr and Cb/Pb). Often times component video is referred to as YCrCb or YPrPB. Component is an analog signal, which means that the image is more prone to noise and crosstalk from other cables.

The only problem with HDMI is that anything that involves it is HORRENDOUSLY expensive. $80 for an HDMI cable is way too common.

Catapultam habeo. Nisi pecuniam omnem mihi dabris, ad caput tuum saxum immane mittam.

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Good thread so far.

"HDMI is simply DVI with audio and a differently shaped plug"

I thought this also allowed for copy-protection as well? And now that Jay mentioned the digital RGB, I now recall reading that DVI is a bitch to copy from because of the sheer throughput of video, and I know that RGB is a buttload of information.

Okay, guys. Here's one: What's the difference between analog and digital component video, then? Apparently they can both use the Blue-Red-Green wires, and I've read home theater magazines where the reports have stated the analog-component video connections are labelled as digital-component video connections (which I believe is the YCrCb, and analog was YPrPB).

Am I missing something here?

<span class=“Italics”>MeBeJedi: Sadly, I believe the prequels are beyond repair.
<span class=“Bold”>JediRandy: They’re certainly beyond any repair you’re capable of making.</span></span>

<span class=“Italics”>MeBeJedi: You aren’t one of us.
<span class=“Bold”>Go-Mer-Tonic: I can’t say I find that very disappointing.</span></span>

<span class=“Italics”>JediRandy: I won’t suck as much as a fan edit.</span>

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DVI can carry HDCP protection over it as well.

YCbCr is simply the 3 components of an NTSC signal split, it is what is stored on a DVD and does not usually leave the player, YCbCr is usually carried over a single cable and is digitally encoded. YPbPr is used to carry HDTV and progressive video, it is analog, and are the familiar 3 wires we all know and love.

YCbCr inputs or outputs are usually mislabled YPbPR. However, the terms are used to interchangably, nobody really cares at this point.

Catapultam habeo. Nisi pecuniam omnem mihi dabris, ad caput tuum saxum immane mittam.

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Originally posted by: skyman8081
HDMI is simply DVI with audio and a differently shaped plug(No Thumbscrews! Yay!).

They're actually different standards. In addition to the integrated audio support, HDMI allows for much longer cable runs than DVI and can handle digital component video natively. HDMI is backwards compatible with DVI.

Originally posted by: skyman8081
The only problem with HDMI is that anything that involves it is HORRENDOUSLY expensive. $80 for an HDMI cable is way too common.

For a 30' run maybe. You can quite easily get a 6' HDMI cable for $20, which is longer than most people would need. I recommend staying away from the Monster Cable section at Best Buy and Circuit City.


Originally posted by: MeBeJedi
I thought this also allowed for copy-protection as well? And now that Jay mentioned the digital RGB, I now recall reading that DVI is a bitch to copy from because of the sheer throughput of video, and I know that RGB is a buttload of information.


Both HDMI and DVI allow HDCP encryption. You're correct about the difficulty in capturing DVI signals, which is one of the reasons why the industry adopted it. What goes over the cable is the uncompressed signal, and the data rates are extremely high.


Originally posted by: MeBeJedi
Okay, guys. Here's one: What's the difference between analog and digital component video, then? Apparently they can both use the Blue-Red-Green wires, and I've read home theater magazines where the reports have stated the analog-component video connections are labelled as digital-component video connections (which I believe is the YCrCb, and analog was YPrPB).


YPbPr is the analog form of YCbCr, as skyman said. Consumer equipment uses YPbPr, but is sometimes mislabled as YCbCr. HDMI is the first consumer connection that supports YCbCr natively.
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Gotcha, thanks.

<span class=“Italics”>MeBeJedi: Sadly, I believe the prequels are beyond repair.
<span class=“Bold”>JediRandy: They’re certainly beyond any repair you’re capable of making.</span></span>

<span class=“Italics”>MeBeJedi: You aren’t one of us.
<span class=“Bold”>Go-Mer-Tonic: I can’t say I find that very disappointing.</span></span>

<span class=“Italics”>JediRandy: I won’t suck as much as a fan edit.</span>

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This is all useful information - can the thread be moved to GENERAL PRESERVATION AND FAN EDITS > REQUESTS, HOW-TO'S, AND TECHNICAL DISCUSSIONS?