Originally Posted by dbphd
Before I start rearranging cables, are Blu-ray discs encoded with HDCP? If so, that removes the HDMI link from the Oppo 105 to the projector from suspicion because those discs play without an encoding problem.
My planned order of attach:
- Unplug both DirecTV and Oppo 105 and check HDMI connection.
- Connect DirecTV HDMI directly to projector; also try HDMI connected to front of Oppo.
- Replace HDMI cable from DirecTV to Oppo.
If one or more of those steps don't solve the problem, I'll investigate the Dr. HDMI, but I tend to be skeptical of such devices.
Yes they are, but no it doesn't. Commercial Blu-ray discs are almost universally "copy protected", but the way HDMI's copy protection protocol (HDCP) works, it is quite possible for one source to succeed over an HDMI cable whereas another source fails over the same cable. HDCP is finicky. It LIKES to fail.
That said, it sounds like your DirecTV box is having trouble passing the HDCP check when it has to do that THROUGH the OPPO.
This is almost certainly due to flaky implementation of HDMI in the DirecTV box, but that flakiness may be exacerbated by marginal cabling. And yes, all the cables in the HDMI signal path are suspect. HDMI (and HDCP) are end to end protocols driven by the source device. In this case the DirecTV has to satisfy itself that copy protection is working TO the OPPO, and then also has to satisfy itself that it is working THROUGH the OPPO to what's beyond. That least bit -- called "repeater processing" is still being done by the DirecTV box. The source device controls the protocol.
The cable carries both high bandwidth (the video) and low bandwidth (control information) data, and both have to work without flaw for HDCP to be happy.
There's nothing you can really do to alter the low bandwidth part of that, but there IS stuff you can do to experiment with reducing the high bandwidth part.
So, start by setting your DirecTV box to output 480p (not 480i -- 480p is the "simplest HDMI signal) -- ONLY. If it has an adjustment for Deep Color, turn that OFF. If possible, set the DirecTV to output a specific video format (rather than AUTO) -- YCbCr 4:4:4 would be the normal choice.
In the OPPO, also set its output to explicit 480p with YCbCr 4:4:4, and Deep Color OFF. Set the OPPO to output HDMI Audio LPCM. In the OPPO, turn off HDMI CEC (remote control over the HDMI cable).
Now try that combo with those premium (i.e., copy protected) DirecTV channels. If it STILL fails, that doesn't tell you much. It could still be the DirecTV doesn't know how to handle the handshake THROUGH the OPPO. Or it could be that low bandwidth cable problem I alluded to above.
But if it WORKS, then next try setting the DirecTV to 1080i output and also the OPPO to 1080i output. And if THAT works, then try switching both to 1080p output.
If 480p and 1080i work, but 1080p does not, then that pretty much points the finger at the cabling.
NOTE: HDMI cables are sold in two flavors. What you need are "high speed" HDMI cables. These will be sold as "High Speed" or "For 1080p" or "Category 2", all of which mean the same thing. An HDMI cable NOT sold that way MAY also work with 1080p, but it also may fail. That's a typical sort of "marginal cable" problem. Any daisy-chained cables, adapters, wall plates, HDMI switches, gizmos (Darbee Darblet), or other stuff in the HDMI signal path -- again, end to end -- should also be suspect. Wall plates (commonly used to dress up the cable feed to a projector) were notorious at one point for not working for 1080p.
The reason GSR wanted you to try the experiment using the HDMI 2 output only from the OPPO -- HDMI 1 not connected -- is that the HDMI 1 output goes through more processing elements inside the OPPO, and all of those complicate the job the DirecTV is trying to do to satisfy copy protection. It may be the DirecTV is smart enough to handle the simpler path leading out to HDMI 2, but not the more complex path through HDMI 1. This would be a bug in the DirecTV.
Regardless of what you find, let OPPO Tech Support know the results. Sometimes it is possible for an "intervening" HDMI device (the OPPO in this case) to work around problems in the HDMI implementation in the "source" device (the DirecTV in this case). The trick of course is to do that in a way that doesn't break HDMI for everybody else.