|
This topic comprises 2 pages: 1 2
|
Author
|
Topic: Live TV Feeds
|
|
|
|
|
|
|
|
|
|
|
Joe Elliott
Master Film Handler
Posts: 497
From: Port Orange, Fl USA
Registered: Oct 2006
|
posted 09-27-2009 01:49 AM
Oops, actually got the name a little off. Here is the Wikipedia entry for it.
*** High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection developed by Intel Corporation [1] to prevent copying of digital audio and video content as it travels across DisplayPort, Digital Visual Interface (DVI), High-Definition Multimedia Interface (HDMI), Gigabit Video Interface (GVIF), or Unified Display Interface (UDI) connections. HDCP does not address whether copying would be permitted by fair use laws. The specification is proprietary, and implementing HDCP requires a license.[2]
For DVI interfaces, HDCP is optional.[3][4]
HDCP is licensed by Digital Content Protection, LLC[5], a subsidiary of Intel. In addition to an annual fee, licensed adopters agree to the conditions set forth in the HDCP License Agreement.[6] For example, high-definition digital video sources must not transmit protected content to non-HDCP-compliant receivers. Additionally, DVD-Audio content is restricted to CD-audio quality or less[6] on non-HDCP-digital audio outputs (analog audio outputs have no quality limits). Licensed adopters cannot allow their devices to make copies of content, and must design their products in ways that "effectively frustrate attempts to defeat the content protection requirements."[6] The technology sometimes causes handshaking problems, especially with older high-definition displays. ***
I first ran into the limitations of HDCP when trying to connect our cable and satellite equipment to a Barco DP-100. The DP-100 has DVI-D ports which are not HDCP compliant. We could not get picture at all on the cable box, even though it was supposed to only drop it to 1080i. And on the satellite box it would only do 720i. We had to get a scaler/switcher, and input both that way. I would have liked the unit built for the DP-100, but it is $4500, and the scaler/switcher our satellite guy found was $350.
| IP: Logged
|
|
|
Mitchell Dvoskin
Phenomenal Film Handler
![](http://www.film-tech.com/ubbmembers/751b.jpg)
Posts: 1869
From: West Milford, NJ, USA
Registered: Jan 2001
|
posted 09-27-2009 01:35 PM
> I'd avoid HDMI and go component to DVI. When you use HDMI then you have to deal with HDCP, high-definition copy protection.
While HDCP is optional for DVI, all recent sources, including Satellite Receivers, Blu-Ray, Upconverting DVD use it. If your projector does not support HDCP, DVI will work no better than HDMI.
There are devices available on the internet that will take HDMI sources, up to 1080p, and output them to Component Video in the same resolution that was inputted. If your projector does not accept component inputs, there are devices available on the internet that will take component and output HDMI.
HDMI and DVI, as far as picture goes, are the same bit stream. There are converter cables available everywhere between them.
| IP: Logged
|
|
|
|
|
All times are Central (GMT -6:00)
|
This topic comprises 2 pages: 1 2
|
Powered by Infopop Corporation
UBB.classicTM
6.3.1.2
The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion
and agrees to release the authors from any and all liability.
|