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I'm pretty much resigned to using Windows on my main HTPC, plus I play the odd Steam game on it so it makes sense anyway. Upgrading from Windows 7 to Windows 10 for HDR support is a bit annoying but not a disaster. I'll probably end up just plonking in a GPU instead of upgrading the whole rig when I get my next TV though - it mainly depends on whether GPU prices ever return to normal and also whether AMD or nVidia make their next HTPC-oriented card actually have enough VRAM for 4K video playback for Netflix, etc.
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2018-03-23, 22:34
(This post was last modified: 2018-03-23, 22:37 by JK1974.)
I read about this, but if you have a HDR-ready 4K display, conversion from HDR to SDR is a less interesting option than playing it back in HDR.
It seems to me that HDR to SDR is just important as an in-between-step or as a solution for backups to "standard" BDs. Additionally, there would not be the need for the HDR feature of 4K players.
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2018-03-24, 00:46
(This post was last modified: 2018-03-24, 01:09 by Mount81.)
The point of the HDR->SDR conversion is mainly to have more proper colors and PQ in the case if HDR content is displayed on a an SDR TV/Projector.
Other hand, in the case of video players that doesn't support yet HDR output, it's also useful to have at least -somewhat- proper SDR PQ on a HDR display. So if the video is 4K/HDR you can keep the 4K, loose the benefits of HDR, but have better and more appropriate SDR picture.
Tho' it's up to ones jury to find whether the FHD and "original" SDR or the 4K and converted SDR PQ more likable (4K res vs. unconverted SDR). Guess that's where the capabilities of the playback devices and softwares can make big differences. But conversion is conversion, so some PQ altering and difference is inevitable compared to the "native" SDR. Also count in, that -like many conversions- it can be quite a bit resource-intensive. So this could also narrow down the circle of the possible devices.
At least that's what i can think over this for now...
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2018-03-24, 10:29
(This post was last modified: 2018-03-24, 10:30 by JK1974.)
Completely right, but neverthless, my initial question remains: Do we really have no HDR ouput possibilities on Linux yet, and why is it on the contrary said to be working on AMS905X/S912 devices under Linux? Is it just a HDR-to-SDR conversion an thus fake advertisment for all users having a HDR-capable display?
Or asked differently and related to this thread: Do we really have to wait so long for getting proper HDR output via HDMI on Gemini Lake etc., or was this just false information? What is the real current status?
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2018-03-24, 12:12
(This post was last modified: 2018-03-24, 12:21 by Mount81.)
I repeat: HDR works properly on S905X boxes with LibreElec a relatively long time ago. The developer(s) of the Amlogic LibreElec have been started to develop it quite earlier.
Intel just recently introduced the HDR support for some of their CPUs (on Windows 10 only), but it didn't included i.e. the Gemini Lake platform. It's hard to say now if the Gemini IGPs on the integrated boards will ever get official intel driver support for HDR (my guess would be no), but it seams -somewhat- possible that it MAY could have be unofficially solved (primarily on Linux/LE). But yet that still remains just an optimistic presumption.
On hardware level, the Intel systems and the Amlogic platform could be also technically two completely different ground for the developers to deal with and the components of relevant Linux solutions can't just be ported over that easily (if at all). But that's just generally known expressly.
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2018-03-25, 21:44
(This post was last modified: 2018-03-25, 21:47 by User 280158.)
So Geminilake won't support HDR on Windows? What is the lowest tdp Intel/amd cpu for HDR?
-HomeDope