HDR10+ support on ATV4K possible from MKV?

[mihyli]

As title says... is this even possible?

[Jarvismeier]

No. Apple doesn’t support HDR10+.

[michel34]

Has anybody ever seen a difference between Hdr and Hdr+?

[Jarvismeier]

I’m going to assume it’s the same difference as HDR10 vs Dolby vision. Dark scenes probably won’t be so dark.

[michel34]

Up til now I am not too impressed with all incarnations of hdr with movies. I was using hdr with photography for years with pleasing results. For me hdr brought better differentiation in dark areas. With movies the focus obviously lies in brightness which leads to overblown highlights and crushed blacks.
I am using atv4k and Oppo 203 on Sony Oled.

[noggin]

Up til now I am not too impressed with all incarnations of hdr with movies. I was using hdr with photography for years with pleasing results. For me hdr brought better differentiation in dark areas. With movies the focus obviously lies in brightness which leads to overblown highlights and crushed blacks.
I am using atv4k and Oppo 203 on Sony Oled.

From a broadcast video perspective - HDR is really only supposed to be used to accommodate highlights and speculars in the HDR range, you aren't really supposed to push major scene content out of the SDR range.

SDR content is mastered conventionally for 100nits, so the 100-1000 or 100-4000nit range is the HDR range to avoid highlights and speculars being clipped, i.e. they are not overblown, but instead have detail. (This is really clear on well mastered HDR at night - where neon signs, street lights, car lamps etc. have detail rather than clipping, or in daytime scenes where you get detail in clouds that would usually just clip out or be brought out by a heavy knee)

100 nits is a LOT dimmer than most people run their TVs for SDR content though - which is one of the reasons PQ HDR is accused of being a bit 'dark'.