Can't get HDR

[Anglofun]

Afternoon

I have an Epson 2350 projector, with a Yamaha aventage a4a on an appletv 4k.

For the life of me, I can't get the the 4K HDR setting to happen. No matter what it goes back to SDR. An idea (of stupidity) was my HDMI cable. So I bought a 48GPS HDMI hoping it was that, but it wasn't.

Hoping for an easy fix!

 

[BoredSysAdmin]

what is the source app you're testing hdr with?

 

[dolynick]

An AppleTV 4k box can certainly be set to output HDR full time or auto-switch with content.

If it is failing the test, I would look at settings for HDMI on the other two devices. Most likely it will be on the Yamaha and be a setting that enables higher bandwidth on the port(s) outgoing and incoming. It would be worthwhile to also check the Epson though just to be sure there isn't a mode setting there as well.

Edit:
A quick search suggests your Yamaha should be set to "mode 2" for that HDMI input (60 Hz 4k HDR w/ dolby vision suport). Mode 3 is required if you want 8k or greater than 60Hz on 4k.

A little more searching suggests that your Epson is limited to 18Gbps and only supports 4k HDR @ 24Hz (or maybe 30). Try setting the AppleTV output to that and see if you have more luck.

 

[Trebdp83]

As @dolynick mentioned, the projector does not support HDR @60Hz. If you want everything output in HDR from the Apple TV 4K, you can set it to 4K HDR @30Hz. If not, you can set it to SDR @60Hz and turn ON Match Dynamic Range and Frame Rate and anything in HDR @24Hz should work. The projector's limitations indicate a High Speed(10Gbps) HDMI port rather than a Premium(18Gbps) HDMI port which would support HDR @60Hz.

 

[Anglofun]

Wow. that makes perfect sense. Can't wait to try. Will chime in with results

 

[Anglofun]

Morning!

Works like a charm!

Thank you very much