Sunday, March 23, 2014

Where can I download HDCP test content?




Freedom


Hello,

I am working on my home theater setup, I am working on some calibrations and I'd really like a way to verify everything is in place as it should be. The plan I have is to install a blu-ray reader on my PC and run it to my projector, before I do that I'd like to see a little bit of 1080p content. I've downloaded some 1920x1080 video clips but I don't think this is what I am talking about. I am looking for something that will run like it was a blu-ray disk, even just seconds worth would be cool. I am concerned about HDCP working with my sound and video as I'd like it to.

Thank you.



Answer
I'm not sure you have things quite straight.

The only thing you can be sure will "run like ... Blu-ray" is a Blu-ray disk. The reason is that Blu-ray video is (primarily) 1920x1080 resolution @ 24 fps, and 8 bit colour with a maximum bitrate of 40 Mbit/s ... and the whole thing MPEG2 or 4 or VC-1 coded in a multiplexed MPEG transport stream format.

Other video streams ... such as your 1920x1080 clips ... may be the same resolution as Blu-ray but likely are not the same framerate, bitrate or even coding.

As to HDCP it is a form of DRM that (when active) is supposed to ensure that only authorized HD connections (HDMI) work and that analog HD capable video formats (e.g. component video) do not pass video above SD resolution. HDCP has nothing to do with calibration or how the video looks ... other than to possibly degrade or cut it off.

HDCP is also unrelated to audio (although if it causes cutoff of the HDMI connection it may cut off BOTH video and audio on the HDMI line (I'm not certain).

By the end of 2010 HDCP will kick in and HD analog connections will no longer be allowed on new Blu-ray equipment (existing models can be sold until 2013). BTW, it isn't clear yet if studios will implement the Image Constraint Token (ITC, the mechanism by which HDCP would be triggered) on Blu-ray disks anytime soon. At the moment the mechanism exists but has been unused.

This stuff is all complex, but most of it is (at least supposed to be) transparent to the user. "All" you need to do is ensure any video equipment is described in the specs as HDCP compliant. Given your intent to use a computer based player though ... and not all are HDCP compliant you should verify before proceeding or your HDMI connection may no longer work if the ITC is implemented on Blu-ray disks at some future date.




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