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LibreElec and 4K HDR Videos - Printable Version

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+---- Thread: LibreElec and 4K HDR Videos (/showthread.php?tid=308216)



LibreElec and 4K HDR Videos - cyber201 - 2017-02-26

Hi to all, I have a PC with LibreELEC v8.0 + Intel KabyLake + nVidia GTX 1070 + Samsung KS8000 and when I try to play a video in HDR, the TV don't recognize it.
But LibreElec support HDR?

Thanks a lot


RE: LibreElec and 4K HDR Videos - fritsch - 2017-02-26

No it does not (and this was concerning your TV not "detecting" them).


RE: LibreElec and 4K HDR Videos - cyber201 - 2017-02-26

OK, thanks...but what is the problem? The kernel of LibreElec or the nVidia card?


RE: LibreElec and 4K HDR Videos - fritsch - 2017-02-26

a) Decode -> b) Render -> c) Display

a) Nvidia has no hevc-10 bit decoding support on linux with vdpau. Therefore SW decoding is used (check)
b) Render only has 8 bit visual support non check
c) Display from the the display driver does whatever it wants, most likely RGB24 non check

A long way to go ...


RE: LibreElec and 4K HDR Videos - cyber201 - 2017-02-26

Ok, thanks for your support....


RE: LibreElec and 4K HDR Videos - kalebroc - 2017-06-17

Hi Fritsch, just having a read of this post and was wondering is there any update on getting hevc-10 bit support on Linux with vdpau?

Thanks for all the work and info you guys give on this forum


RE: LibreElec and 4K HDR Videos - fritsch - 2017-06-17

No - vdpau (the decoding standard) itself does not support it and also nvidia's driver does not implement. Absolutely zero we can do for VDPAU.


RE: LibreElec and 4K HDR Videos - kalebroc - 2017-06-19

Fritsch, thank you for the reply, that kinda sucks doesn't it? My HTPC (Core i3 7100, 8GB RAM, 256 GB SSD & Nvidia GTX 1050Ti 4GB) looks like it will be going back to Windows 10 from Libreelec in order to get proper 4K HDR movies to play. What really sucks is a Beelink GT1 Ultimate Amlogic S912 android box running the experimental LibreELEC 8.0 for S912 from kszaq seems to play everything I throw at it, 1080p, 4k & even 4K HDR. Hopefully Nvidia will get their act together and sort out proper drivers for Linux, in the meantime back to Windows 10 and I suppose trying to get 4K HDR on Windows is going to be a pain !!!!!!


RE: LibreElec and 4K HDR Videos - fritsch - 2017-06-19

Alternatively you can implement CUVID - yet another proprietary nvidia decoding mechanism ... that one exists in ffmpeg already.


RE: LibreElec and 4K HDR Videos - kalebroc - 2017-06-19

cool, I'll certainly have a look into that, thank you again for the excellent info