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» Film-Tech Forum ARCHIVE   » Community   » The Afterlife   » Is a HDMI signal from your dvd player better than component or RGB? (Page 2)

 
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Author Topic: Is a HDMI signal from your dvd player better than component or RGB?
Stephen Furley
Film God

Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002


 - posted 06-03-2005 12:10 PM      Profile for Stephen Furley   Email Stephen Furley   Send New Private Message       Edit/Delete Post 
quote: Joe Redifer
I hope it is turning into a trend, whether the quality really is better or only imaginary. The more devices that support the protocol, the cheaper those freakin' cables will become.
Joe, at the momeent there's a special price on 3 metre cables of the highher quality type whichh makes them cheaper than the budget ones at: dvigear Other lengths are still expensive however.

On there website these people have various documents, including one entitled: HDCP - For Better or for Worse?; you can find it
here

According to these people the implementation of HDCP is mandatory with HDMI, but optional with DVI-D.

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 06-03-2005 04:29 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
As always, there is more here than meets the eye.

As to DVI(HDMI) versus component analog...you are not going to see the difference all of the way up to 1080, in terms of picture quality and presumming that you are within standards of each.

Analog degrades over the length of the cable in both overall level and HF response...as such, as the cable gets longer, the levels will be off and the image will become more smeared.

Digital signals work great...until they dont. With standard cable, DVI (HDMI) tops out at 3-meters. That length and shorter is going to be in the cheap price range. Above that, the bandwidth of signal puts a strain on inferior cables. It is one of its problems. With DVI the connector is issue due to its size. I like HD-SDI (broadcast) since it is a single coax cable that can go about 300-feet (if both the transmitter and receiver truely meet HDSDI standards, ANSI/SMPTE 292), repeated if necessary to increase range, can carry audio and requires relatively inexpensive cable. But it is broadcast and normally is terminated in BNC connectors (nice since they don't fall out like RCA type phono connectors).

The problem with component for the home is that it requires three equally lengthed cables that the end-user (read idiot) to plug everything in correctly with the "Y" terminal using the GREEN connector/cable. HDMI offers a single cable/connector solution without the user (read idiot) to lock/unlock anything in place.

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Frank Dubrois
Jedi Master Film Handler

Posts: 896
From: Cleveland, OH
Registered: Mar 2005


 - posted 06-03-2005 07:03 PM      Profile for Frank Dubrois     Send New Private Message       Edit/Delete Post 
At this point, my Pioneer Elite DVD player has a better looking 480p (component out) picture than ANY other DVI, HDMI or so called "upconverting" DVD player that I have seen. The way you connect your player to your monitor isnt quite as important as the scaler/processor in your unit.

As far as the Bravo D3 goes, it is behind schedule. It was supposed to be out last year, so I emailed the company and asked "WASSUP?". The unit was a ways away from production, so they didnt have a photo or any up-to-date stats on it. You can ask them to put you on the mailing list for when the unit is about to be released. It had a suggested retail price of $399 last year, but considering technology and price drops, I'd expect a release price of around $299.

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Joe Redifer
You need a beating today

Posts: 12859
From: Denver, Colorado
Registered: May 99


 - posted 06-04-2005 04:51 AM      Profile for Joe Redifer   Author's Homepage   Email Joe Redifer   Send New Private Message       Edit/Delete Post 
quote: David Stambaugh
DVI seems like an ill-conceived "standard" for home theater use from the get-go. Not having the video and sound carried over the same interface can be a major nuisance.
What is the advantage of having the audio included with the video if your TV does not have a built-in digital tuner and thus an optical output? You'll still have to route the HDMI to the TV and a separate audio cable to the receiver.

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Bobby Henderson
"Ask me about Trajan."

Posts: 10973
From: Lawton, OK, USA
Registered: Apr 2001


 - posted 06-04-2005 12:31 PM      Profile for Bobby Henderson   Email Bobby Henderson   Send New Private Message       Edit/Delete Post 
I think the goal with HDMI is to provide home theater customers a way to hook everything up with far fewer cables. I would be all for that.

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Joe Redifer
You need a beating today

Posts: 12859
From: Denver, Colorado
Registered: May 99


 - posted 06-04-2005 06:11 PM      Profile for Joe Redifer   Author's Homepage   Email Joe Redifer   Send New Private Message       Edit/Delete Post 
The only way to do that is to come out with an HDMI switch box, and those cost a couple million right now.

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Sam Graham
AKA: "The Evil Sam Graham". Wackiness ensues.

Posts: 1431
From: Waukee, IA
Registered: Dec 2004


 - posted 06-04-2005 11:34 PM      Profile for Sam Graham   Author's Homepage   Email Sam Graham   Send New Private Message       Edit/Delete Post 
quote: Bobby Henderson
Is it turning into a real trend to include HDMI output on DVD players? If so, are there any DVD-A/SACD players using HDMI to output high resolution surround audio?
According to the faq at the High Definition Multimedia Interface Consortium, the HDMI 1.1 specification was developed to accomodate the DVD Audio format, but thus far HDMI has not adopted SACD. To quote the faq: "The HDMI Founders do not comment on future revisions of the spec, however there is no technical reason why HDMI could not support SACD."

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Frank Dubrois
Jedi Master Film Handler

Posts: 896
From: Cleveland, OH
Registered: Mar 2005


 - posted 06-06-2005 03:27 AM      Profile for Frank Dubrois     Send New Private Message       Edit/Delete Post 
I find that hard to beleive. Its near impossible to find a HDMI receiver yet. Who would want to play their audio through their TV?? There are plenty of TV's with HDMI inputs (obviously meant for video) but where is the HDMI inputs for the receivers? I don't know about you, but I'm not about to drop $2000-$3000 on a receiver. HDMIT has been around for a little while now..and TV's have done well to catch up, where is the receiver support? If HDMI was originally meant for DVD-Audio, perhaps some where along the way, developers changed their mind since DVD-A and SACD are still somewhat at way?? It doesn't make any sense to me as to why HDMI inputs aren't as common on new receivers as they are on new TV's.

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Bruce Hansen
Jedi Master Film Handler

Posts: 847
From: Stone Mountain, GA, USA
Registered: Dec 1999


 - posted 06-06-2005 12:04 PM      Profile for Bruce Hansen   Email Bruce Hansen   Send New Private Message       Edit/Delete Post 
DVDs ARE NTSC. You can try to make them 480P (look out for motion artifacts, because those two fields are ment to be shown at different times (at least with stuff that was shot on video)), you can try up converting them to 720P or 1080I, but DVDs are still NTSC. You can't just make up what isn't there in the first place. Your HDTV should be able to upconvert the output of your DVD player, so why put the money into having the same ability in your DVD player as well?

I'm with you Steve. Why do we keep coming up with new standards, when we already have a BETTER standard. SMPTE 292 blowes away HDMI, and DVI.

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Frank Dubrois
Jedi Master Film Handler

Posts: 896
From: Cleveland, OH
Registered: Mar 2005


 - posted 06-06-2005 12:40 PM      Profile for Frank Dubrois     Send New Private Message       Edit/Delete Post 
How can your HDTV upconvert a DVD?

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Joe Redifer
You need a beating today

Posts: 12859
From: Denver, Colorado
Registered: May 99


 - posted 06-06-2005 12:58 PM      Profile for Joe Redifer   Author's Homepage   Email Joe Redifer   Send New Private Message       Edit/Delete Post 
DVDs can actually store 24fps and 30fps in a progressive format and display it that way. When hooked to a regular NTSC TV, the DVD player adds the necessary pulldown (in probably most of the movies you own). There are no motion artifacts watching a 24fps movie in progressive scan unless the DVD player and/or the TV (moreso the DVD player) just really suck. Every once in a blue moon I will see a single frame of combing at a scene change on a less-than-professionally authored DVD. I shoot all my stuff in 24p (24p is a policy and MANDATORY where I work, except when it's not), and there is never ever any combing or motion artifacts when played back in progressive scan at 24p. And yes, the DVD actually stores the content as 24p. The files are smaller as a result compared to a 60i sequence of the exact same length at the same compression settings.

Frank,
Fixed pixel displays (LCD, Plasma, DLP, etc) MUST scale the DVD video and everything else up to its native resolution, which is usually 720p (or worse, 768p or some other oddball non-conforming standard).

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Warren Smyth
Expert Film Handler

Posts: 158
From: Auckland ,New Zealand
Registered: Aug 2003


 - posted 06-07-2005 06:38 PM      Profile for Warren Smyth   Email Warren Smyth   Send New Private Message       Edit/Delete Post 
I am using an HDMI link between the DVD player and projector. My experience is that on average to poor quality DVDs, you cannot notice any difference as when using a component link. On very good resolution DVDs, you can notice a very slight improvement to the picture quality. I am using a longer cable (5 metres).

I would however say that the connectors are totally inadequate for the weight of the cable. A slight movement of the cable connector at either end, breaks the connection. A larger connector with screw or clip supports would have been an improvement. When using the shorter cable which is lighter, the problem is reduced.

I am surprised that the development of a new standard could have been accompanied by such poor research and development of the connectors. I am using cable cable supports to take the weight of the cable off the connectors.

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David Stambaugh
Film God

Posts: 4021
From: Eugene, Oregon
Registered: Jan 2002


 - posted 06-07-2005 09:31 PM      Profile for David Stambaugh   Author's Homepage   Email David Stambaugh   Send New Private Message       Edit/Delete Post 
quote: Bruce Hansen
You can't just make up what isn't there in the first place.
Sure you can! Sony calls it "Digital Reality Creation". [Eek!]

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