Looking to get the complete Harry Potter collection. My theater only has an older BenQ 1080p projector so even though I have 4k bluray player and receiver I can't run 4k discs due to HDCP 2.2 error.

There's a cheap Bluray set for sale but the first 5 or so movies have the 16bit LCPM soundtracks and I want to get a collection that has DTS-HD for all of them.

The 4k Collection also includes standard blu ray discs and I was just wondering what soundtrack is on those standard discs. Is it the old LCPM one or do they use the 7.1 DTS-HD track on the 4k discs?

Its DTS-MA 5.1. I doubt its any different from the older ones, just compressed. The UHD discs are DTS:X.

Thanks, I was actually just reading up on 2.1 to 1.4 converters (just ordered the monoprice one) so I may be able to access the audio from the UHD discs afterall.

I've got a 5.1.4 speaker setup so actually getting to hear the DTS:X tracks would be sweet.

Is this just an anal retentiveness thing where you feel compelled to need consistency in formats? (I'm not asking that as an insult. I have a little of that myself sometimes.)

DTS-HD MA is just a lossless compression packet with a PCM soundtrack inside. Once decoded, there's no quality difference between PCM or DTS-HD MA.

Oh it definitely is....not seeing DTS-HD MA on my receiver when the movie plays definitely bugs me. Not rational but something I'm willing to spend an extra $20ish to not have to distract me when i'm watching the movie.

If the 2.2 to 1.4 converter thing works though then I'd actually be able to access the Atmos tracks on the UHD discs which would be sweet. It'd satiate my OCD and actually give audio benefit.

If you have a modicum of computer savvy, then you can remux the audio from the UHD to the video on the regular Blu-ray and enjoy it that way. However, if you're not set up to view such files in your theater (or rip them as it takes the right kind of Blu-ray drive), then it might be stretch to learn to do so just for this collection.

I almost don’t want to mention this out of fear that the HDCP police find out, but I have no issues playing UHD discs on my Oppo UDP-205 to a BenQ 1080p projector that is certainly not HDCP 2.2 compliant... I even use the input on the Oppo to trick my Comcast box into thinking I have a 2.2 compliant 4k display so I can tune in 4k versions of channels and downscale them to 1080p (big step up over the 720p versions!).

Is Oppo breaking HDCP rules or are the players allowed to rely on older HDCP versions if the output is “just” HD?

If you don't have an HDCP 2.2 display, then the output will revert to hdcp 1.4 with a max 1080p output. This is legitimate and many people use this to get Atmos on their 1080p system.

As for the other path, it can vary. If Oppo is working properly, it should be reporting to the upstream device that the pathway is HD only since the maximum HDCP supported is 1.4. Of course, it also depends on the comcast box knowing what to do with this information and set the output appropriately. Of course, it could be the comcast box is doing the right thing and outputting 1080p, just when it checked to see if you could use 4k, it did an incorrect check and just relied on whether it could use HDCP 2.2 on the current link, not whether the device downstream supported a full 4k path.

It could also be the Oppo is working incorrectly and only encrypting on a link by link path and not passing the HDCP keys upstream. This also happens often enough because it is quite complex handling multiple repeating devices. HDMI splitters almost universally get it wrong which is why you can often use them to remove HDCP.

Correct. Has the OP actually tried to play a 4K disc, or just assuming it won't work? I have played 4K Discs on a Sony X700 through my Denon X3400H to my BenQ HT2050a 1080p PJ just fine.

I've got a Oppo 203 and it wouldn't play 4k's with my Benq HT1075...setting stuff to downscale so I could try and get the Atmos/DTS:X soundtracks from UHD's would just give me the HDCP error screen. The splitter route is working for me though so all is well, I'll be buying the UHD Harry Potter set and get the DTS:X soundtracks. And I think I'll be upgrading to a 4k projector in the next 12 months so it makes sense to buy those ones now.