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Quick PC "monitor" connection question

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Just rebuilt the HTPC and installed windows 7 ultimate, now I've got a choice of connecting it to the "monitor" (a 40" full HD TV) via VGA or DVI>HDMI cable, I'm sure Ive read somewhere though that th…
harlzter Avatar
7y, 7m agoPosted 7 years, 7 months ago
Just rebuilt the HTPC and installed windows 7 ultimate, now I've got a choice of connecting it to the "monitor" (a 40" full HD TV) via VGA or DVI>HDMI cable, I'm sure Ive read somewhere though that the DVI way does something to affect playback of HD material (something to do with copy protection?) but now I cant find anything about this, so will HD Films play back without hitch via the DVI>HDMI cable?


Or am I losing the plot and imagining this?
harlzter Avatar
7y, 7m agoPosted 7 years, 7 months ago
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1 Like #2
I never had any problem playing back high def through DVI or HDMI, I think there may be a problem if your TV isn't HDCP enabled, but not positive... all I can tell you is that I never had any probs whatsoever playing back hi-def to an HDCP TV or monitor.
1 Like #3
It is HDCP - in theory if the blu-ray/hd-dvd player cannot establish a secure HDCP link over hdmi then the picture will be downsampled to DVDish resolution. This is optional and can be chosen by the publisher of the disc as to whether it occur - I've not actually seen any discs this occurs on although it may happen in future.

In practice I find that the unencrypted set up via VGA or DVI (assuming the latter doesn't support HDCP, it is possible but not standard) works better - on my PCs with both, the software tends to throw up errors when running on a secure link and won't play. For example, I have a Dell Studio Hybrid with hdmi, DVI, vga and blu-ray - if I try to play back a blu-ray with the HD playback software over hdmi it doesn't work as the system reports an error despite both the PC and TV supporting HDCP. Software updates and graphics card updates haven't helped but it works flawlessly at 1080p over VGA, as above though future discs may be set to be downsampled over the unprotected video link.
#4
Paddy_o_furniture;5935240


Than's for that I thought I was imagining it then for a while

paddy.stone;5935278
I never had any problem playing back high def through DVI or HDMI, I think there may be a problem if your TV isn't HDCP enabled, but not positive... all I can tell you is that I never had any probs whatsoever playing back hi-def to an HDCP TV or monitor.

Our TV should be HDCP enabled as its a fairly recent samsung model.

dcx_badass;5935285
HDCP is the thing, but DVI and HDMI support it but you're graphics card has to aswell. Or you can get Anydvd HD which removes this need.


Looks like AnyDVD HD is what I need.

Johnmcl7;5935286
It is HDCP - in theory if the blu-ray/hd-dvd player cannot establish a secure HDCP link over hdmi then the picture will be downsampled to DVDish resolution. This is optional and can be chosen by the publisher of the disc as to whether it occur - I've not actually seen any discs this occurs on although it may happen in future.

In practice I find that the unencrypted set up via VGA or DVI (assuming the latter doesn't support HDCP, it is possible but not standard) works better - on my PCs with both, the software tends to throw up errors when running on a secure link and won't play. For example, I have a Dell Studio Hybrid with hdmi, DVI, vga and blu-ray - if I try to play back a blu-ray with the HD playback software over hdmi it doesn't work as the system reports an error despite both the PC and TV supporting HDCP. Software updates and graphics card updates haven't helped but it works flawlessly at 1080p over VGA, as above though future discs may be set to be downsampled over the unprotected video link.


Got a map anyone? Lost me about half way through, i'll re-read in the morning when caffeine is at a peak.
#5
Ok, in one sentence - should work fine over DVI/VGA but in future some blu-ray discs may be set to drop to DVD resolution over those interfaces, this feature is optional and on a per disc basis.

John
#6
Johnmcl7;5935286
It is HDCP - in theory if the blu-ray/hd-dvd player cannot establish a secure HDCP link over hdmi then the picture will be downsampled to DVDish resolution. This is optional and can be chosen by the publisher of the disc as to whether it occur - I've not actually seen any discs this occurs on although it may happen in future.

In practice I find that the unencrypted set up via VGA or DVI (assuming the latter doesn't support HDCP, it is possible but not standard) works better - on my PCs with both, the software tends to throw up errors when running on a secure link and won't play. For example, I have a Dell Studio Hybrid with hdmi, DVI, vga and blu-ray - if I try to play back a blu-ray with the HD playback software over hdmi it doesn't work as the system reports an error despite both the PC and TV supporting HDCP. Software updates and graphics card updates haven't helped but it works flawlessly at 1080p over VGA, as above though future discs may be set to be downsampled over the unprotected video link.

How do you know this stuff? I ain't a daft bloke but that had my had baffled
#7
dcx_badass;5935425
All HDTV's with HDMI should support it fine, the only thing really is the graphics card, but I just use Anydvd HD just to be sure and remove problems, also removes the region lock on blu-ray, hd-dvd and dvds.


'Should' support it and reality can be quite different, on systems I've hit this problem on several of my systems (different Pcs, playback software and TVs) where each part of the chain is HDCP compliant but the software won't run due to HDCP problems although a couple are fine. Hopefully by the time the encryption is forced, all HDCP compliant devices will work without issue.

John
#8
Very true, it is a great piece of software but I object to having to buy additional software to get my legally compliant system working although if the downsampling does start being enforced then I may have no choice.

John

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