Originally Posted by D6500Ken
I have a client running a Panasonic DP-UB820 into his Marantz AV8805 into Vertex then into a Lumagen Radiance (1080p).
The Panasonic can transcode 4K HDR2020 to 1080p SDR709, but apparently the EDID prevents Netflix and Amazon Prime from outputting anything but 1080p.
My client claims that he saw a discussion where others are using the Vertex to solve this exact dilemma. Please advise.
If I understand, what you want is for the UB820 to process 4K HDR content from either disc or from Netflix/Amazon and output 1080P SDR REC709.
I suspended my Netflix subscription so I can't test it.
I set the HDfury to EDID 11 - 4K60 444 BT2020 HDR so that the UB820 player and the Amazon App believe they are connected to a 4K HDR capable display.
In the UB820, I set output resolution to 1080P. I set HDR output to SDR REC709 (UB820 tone mapping).
I played a UHD HDR disc. UB820 information screen showed 4K BT2020 HDR source content and 1080P SDR REC709 output.
I played a 4K HDR title in Amazon Video. HDfury reported 1080P REC709 input. (Because of the unique way the UB820 outputs HDR to SDR converted content, HDfury devices report the input as HDR instead of SDR even though displays will recognize it as SDR input. It has to do with the EOTF value in the metadata.) My LG did not report HDR input.
The UB820 won't display source content information for Netflix/Amazon like it does for discs. But if I bring up the progress bar and status information from Amazon, it reports that it is streaming HDR Ultra HD. So I have to conclude that Amazon is sending 4K HDR and the UB820 is converting it to 1080P SDR REC709.
I think Netflix will be a problem though. The Netflix App will not output 4K HDR if the UB820 is set to either SDR BT2020 or SDR REC709. Instead it will output 4K SDR REC709 8-bit. This is a 4K SDR source stream and not a 4K HDR to SDR conversion. I believe this to be a Netflix App bug but I don't think it will ever be addressed.
So I believe you can successfully get:
UHD disc content converted from 4K BT2020 HDR to 1080P REC709 SDR.
Amazon Video content converted from 4K BT2020 HDR to 1080P REC709 SDR.
But you can only get:
Netflix 4K REC709 content output as 1080P REC709. Like I said I can't test Netflix until I restart my subscription so it is possible it won't even send 4K content but 1080P without any conversion by the UB820.