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krychek · 2016-10-08, 18:15

New UHD TVs support HDR. For more information about HDR: https://en.wikipedia.org/wiki/High_dynamic_range
Kodi should definitely support it.

Some sample HDR videos:
http://files.hdrsamples.com/downloads/hd..._draft.mp4
http://files.hdrsamples.com/downloads/hd...HD_HDR.mp4

Thanks.

wesk05 · 2016-10-08, 19:33

It is supported. HDR capable boxes (nVIDIA Shield, Amlogic S905X, 912, HiMedia Q5/10 Pro, Zidoo X9S) on Android can do it.

krychek · 2016-10-08, 23:03

I have a Shield TV directly connected to a HDR capable TV and the TV does not recognize these videos as HDR when I play them with Kodi.
When I play them from a flash drive insterted into the TV with its own software then they are recognized as HDR videos.

I haven't found anything online indicating that Kodi supports HDR.

Even this one doesn't mention anything about it:
http://kodi.wiki/view/Features_and_supported_formats

wesk05 · (This post was last modified: 2016-10-08, 23:52 by wesk05.)

(2016-10-08, 23:03)krychek Wrote: I have a Shield TV directly connected to a HDR capable TV and the TV does not recognize these videos as HDR when I play them with Kodi.
When I play them from a flash drive insterted into the TV with its own software then they are recognized as HDR videos.

I haven't found anything online indicating that Kodi supports HDR.

Even this one doesn't mention anything about it:
http://kodi.wiki/view/Features_and_supported_formats

Shield supports HDR only at 4K 50/59.94/60Hz. If the video that you are testing has a different frame rate and if you have enabled refresh rate switching in Kodi, Shield will not output HDR.

Until HDR support was added to the Shield, no one had any idea whether Kodi will support HDR or not. Apparently, on Android with MediaCodec Surface rendering, Kodi doesn't need any new code to support HDR. This may not be the case with other OSes. Kodi doesn't yet support HDR on Linux & Windows, that may be the reason why there is still no word on HDR support in the Wiki or elsewhere.

krychek · 2016-10-10, 21:34

This video is 4K 60Hz HDR:
http://demo-uhd3d.com/files/uhd4k/LG_Col...ey-HDR.mp4

Still it's not recognized as such by my TV when it's played with Kodi on Shield TV. I even turned off refresh rate switching.

Don't know what to try anymore...

wesk05 · 2016-10-10, 21:54

Do you have a LG or Vizio UHD TV?

krychek · 2016-10-10, 22:49

wesk05 · 2016-10-11, 01:29

That explains it. LG TV requires a proper checksum in the HDR InfoFrame metadata which the Shield doesn't provide. This prevents the triggering of HDR mode on LG TVs. I have no idea whether nVIDIA is working on a fix for this. Your best option would be to contact nVIDIA support and get a ticket for this issue.

krychek · 2016-10-11, 13:29

I have found the solution on nVidia's site: https://shield.nvidia.com/blog/what-is-hdr

As opposed to the USB input, HDR on a HDMI input has to be enabled in the TV's settings.
It wasn't obvious to me that HDMI Ultra Deep Color means HDR in LG language.

So HDR is now working. It's even working with a 30Hz video and refresh rate switching turned on. Thanks.

I guess the topic is still valid if Kodi doesn't support HDR on any other platforms.

Soli · 2016-10-11, 13:34

With the right metadata, the TV set should automatically go into HDR-mode. You do not need to "enable" it, that's not the "solution".

krychek · 2016-10-11, 13:48

If it's disabled in the TV's settings no metadata is going to turn it on.

Soli · (This post was last modified: 2016-10-11, 17:51 by Soli.)

No, it switches over automatically with the right metadata (at least the OLEDs do), but if the manual override works for you then great.

It (your display, when you manually enable uhd mode) probably doesn't look at the metadata, just the bits itself. (In most cases it shouldn't matter that much since HDR and the various implementations are still a mess, and probably why your experience is a little different than mine)

wesk05 · (This post was last modified: 2016-10-11, 17:26 by wesk05.)

As Soli mentioned HDR mode is enabled automatically with appropriate HDR InfoFrame metadata. For Shield to output HDR metadata, it needs to set the HDMI output to 10-bit Rec.2020 and for this you need to enable HDMI UHD color or similar on your TV. You are not enabling HDR per se by enabling HDMI UHD color on your TV.

DrPepper · 2016-11-21, 15:55

So if i understand this right , if it's output is 4k24p it does not switch over to HDR ?

So it's a Shield issue and not a Kodi issue ? is that correct ?