HDR with cac-1070?

Updated on 05-07-2017 in Adapters and Cables

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spikerules 11 0 on 16-03-2017

Hi all,
Finally got the adaptor to work for the first time since early/mid last year. My question now is whether the cac-1070 can support HDR over DP to HDMI? Anyone know?

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MST1407 3 0 on 16-03-2017

sorry but it does not support HDR

spikerules 0 on 16-03-2017

Ouch. Is this something that could be added via a firmware update in the future? It would be very welcome! ME Andromeda has a HDR option on pc and would love to try it out!

MST1407 0 on 17-03-2017

I am starting to doubt it can be added thru firmware, but have no confirmed info on that yet. I will palce you on the “HDR” list as well to send you update you whenever i have new info on that.

spikerules 1 on 17-03-2017

Thanks that would be great

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Dnichols48 2 0 on 29-04-2017

Any update on the possibilty of HDR working with the cac-1070 adapter ?

MST1407 0 on 01-05-2017

Hello Dnichols48,
No positive feedback on that unfortunately. It does not look good though, there is good chance a firmware update is not going to do the “trick”and we might even have to start up a new product for this to work in a proper manner. I di not see any such new product on the roadmap yet, so this will not become available in the next 3 months …

Dnichols48 1 on 01-05-2017

Ok thanks for the response.

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edirol 3 0 on 04-07-2017

Is outputting 4k at 10bit 4:2:0 the same as providing a full HDR signal?

I believe my CAC-1070 is outputting 4k at 8bit 4:4:4 (did a chroma text test), however my HDR mp4 files don’t look quite right.

MST1407 0 on 04-07-2017

Hi edirol,
No that is not the same. The CAC-1070 unfortunately does not support HDR.

edirol 0 on 04-07-2017

Hi MST1407,

Do you know if this is a limitation of DisplayPort or the adapter itself?

From the wiki page DP 1.2 doesn’t support HDR, but DP 1.4 does and the CAC-1070 is a DP 1.2 to HDMI 2.0 adapter.

https://en.wikipedia.org/wiki/DisplayPort

MST1407 0 on 05-07-2017

Not sure if it is the receiver or transmitter chip inside, sorry. We hoped that R&D would be able to add HDR support with firmware update, but unfortunately this seems more complex than I thought and (so far) not possible. It does not show on the roadmap yet, but it only seems logical that the next step will be such an adapter with support for DP1.4 and HDR support … but this will most probably nor become available in the next 4 to 5 months …