My TV (LG 79UF8609) does not support HDR over HDMI. Using latest nightly 20190906. To play 4K-HDR/BT.2020 files with CE the ‘Tone map HDR to SDR’ option in CoreELEC-settings is used. After the option was changed always a reboot took place. 1 Option set to ‘automatic’ 1.1 Playing a 4K-HDR/BT.2020 …

Your conclusion is incorrect. HDR to SDR off simply plays the video without any tone mapping. When it’s set to on with a SDR TV, it will tone map HDR down to SDR. The tone map curve could be bad, but the functionality itself is working fine. What I suggest is you should try to max out your TV’s b…

@TheCoolest : Thanks for your answer. I will try with max backlight. But: When HDR2SDR=off: Why is there a difference with the colors, depending on the sequence of playing a full-HD/BT.709 or 4K-HDR/BT.2020 file? (see my case 3 above). In case 3.1 playing the BT.2020 file is correct and then p…

Do you have the possibility to investigate the inconsistent color-behaviour with HDR2SDR=off? Do you need more imformation/logs? It is very annoying always to have to reboot CE when playing a BT.709 movie after a BT.2020 movie… :unamused:

I see what you mean about #3. @cdu13a can you chip in on what the problem could be with this?

@cdu13a : Do you think you can have a look at this issue? Do you need more infos/logs? Thanks.

It’s on my list of things to checkout. However it might take me a bit to get to it.

Maybe my question is stupid… but is the tonemapping feature for the odroid n2 a kodi thing or a CoreElec thing?

I see - thank you :slight_smile: I didn’t experience the exact same results as the thread starter and I am really happy that there in fact is a tonemapping feature available in CE. In order to improve this functionality, is there something that users can provide? Screenshots? Logs?

Hello, When i press O i can see informations about the file i play but i can’t see informations about “Display mode”, “Pixel format” and “Gamut”. How to make this information appear ? Thks

Problem with tonemapping HDR-to-SDR mapping on N2

Single Board Computers Odroid N2/N2Plus/C4/C5

TheCoolest 16 September 2019 09:08 9

It’s part of the vendor kernel, so it’s a CoreELEC thing.

Artifacts with HDR2SDR function