This has been discussed at large: 4K content mastered with bt.2020 color space has to be converted to bt.709 as well as there has to be a conversion of HDR → SDR (as most 4K rips are in HDR), if the screen/projector can’t handle bt.2020 and/or HDR. There’s no standard for doing all of this and therefore not all results might be pleasing/perfect.
Ok… And no HDR. So, there is no resolution downscaling happening like mentioned in some of the above threads, but the rest is more or less relevant (HDR -> SDR/bt.2020 -> bt.709 conversion and bitdepth conversion).
This is one thing related to bitdepth:
This means that any video that is a 4K UHD rip with bt.2020 colorspace and 10-bit HDR would be converted to 4K bt.709 SDR 8-bit, if the TV/projector can’t handle either bt.2020 or 10-bit.
So, there’s a conversion of HDR -> SDR (bt.2020 -> bt.709) happening as well as 10-bit -> 8-bit. Sam is aware that bt.2020/10-bit and bt.709/8-bit are two sets linked together atm. That might change with some work in a future update (and might resolve some issues: e.g. bt.2020 8-bit or bt.709 10-bit output would be possible then).
Conversion of bt.2020 to bt.709 isn’t standardized and therefore not always perfect:
So, obviously the way conversion of HDR (bt.2020) -> SDR (bt.709) can be done is limited and not something that has been standardized. All conversion has to rely on trial and error/a compromise and the results may vary from source to source.
Conversion will happen as soon as your TV/projector can’t handle HDR/bt.2020/10-bit atm:
So, what you experience should be exactly what has been discussed before as this conversion isn’t standardized nor is it always perfect with any given source file. There might be some improvements coming some time in the future though (so you can tweak the conversion a bit to your liking):
Sam is nearly always around and gives great support as soon as he can. Be sure of that! The support is definitely one of the best you’ll find for any piece of hardware.
BTW: 4K and HDR are working as advertised, conversion to SDR/different color space isn’t something advertised or standardised. Many are waiting for this and hoping for improvements, but we’re not demanding it. For most of us, the Vero 4k is an outstanding piece of hardware with great software support already as it is. And be sure that eventually, if @sam_nazarko promises something or says he’ll look into it, there will mostly be a fix/workaround or improvements.
HDR to SDR conversion doesn’t even work well on most UHD Blu-ray players. My Samsung player cannot do it. So, expecting the Vero to do this would be a bit strange. This is all very new ground to break and we are early adopters and these kind of things unfortunately are to be expected and no media player on the market today provides good HDR to SDR conversion.
I received mine yesterday, glad I did, glad I returned the Shield, it doesn’t even come close to the Vero when talking about 4K HDR playback!
Agreed. I’m one who’d like to have this fixed, but it’s not critical in any way, because if you have a 4K-display, almost all of them handle HDR, and all should handle Rec.2020. The OP is one of the very few with a 4K display, no HDR and no Rec.2020.
Based on the output I see to a SDR, Rec.709 1080p display, I could have one of the display inputs re-calibrated to handle HDR sources from the Vero 4K, so it’s very close right now. It just needs a few tweaks