4K HDR10 videos are too dark on Samsung Q60R TV - LibreELEC-RPi4.arm-10.0.2

Tolga_Sagsoz · March 30, 2022 at 10:35 AM

Hello all. I tried couple of 4K HDR10 movies (Spider Man No Way Home, The Matrix Trilogy, LOTR Trilogy) and realized that the picture is more saturated and much darker than it is on Samsung Q60 TV's native player. Some scenes are just unwatchable. Even i fiddled with the TV settings and it is still darker. I wonder if anyone has this problem. I can confirm that TV recieves the HDR signal and it auto switches to HDR mode. I would use the native player but it doesn't passthrough Dolby True HD atmos but only DD Plus Atmos to soundbar. By the way my RPi 4 is connected to Samsung HW Q70 soundbar.

I also connected my laptop with HDMI and played HDR content without any darkness issues with the same movies.

Thank you very much.

**JohnWayne111** · March 30, 2022 at 10:42 AM

Post

RE: LE 10 is darker than LE 9 in movies !?

Hi,

thanks foryour reply.

No, that doesnt work for me.

I connect directly to the TV and create an edid file via "getedid create"

Now i have the file

"edid-HDMI-A-1.bin" in folder

/storage/.config/firmware/edid

What should i do to solve the problem?

JohnWayne111

January 25, 2022 at 11:53 AM

**HiassofT** · March 30, 2022 at 12:11 PM

Check your TV settings, most likely you have different picture settings configured for the internal player than for the HDMI port with your RPi.

I'm not familiar with your Samsung TV but on my LG OLED the picture settings (Cinema/Game/Sports etc preset, brightness, picture "enhancements" etc) are separate per HDMI port and internal player / apps again have separate settings.

so long,

Hias

**JohnWayne111** · March 30, 2022 at 12:34 PM

Quote from HiassofT

Check your TV settings, most likely you have different picture settings configured for the internal player than for the HDMI port with your RPi.
I'm not familiar with your Samsung TV but on my LG OLED the picture settings (Cinema/Game/Sports etc preset, brightness, picture "enhancements" etc) are separate per HDMI port and internal player / apps again have separate settings.
so long,
Hias

Weird.

Can you explain, why you have a much darker screen with a clean LE10 than a clean LE9 installation?

**popcornmix** · March 30, 2022 at 3:18 PM

Quote from JohnWayne111

Can you explain, why you have a much darker screen with a clean LE10 than a clean LE9 installation?

LE9 has no support for HDR. If you play a HDR video then the colours will be completely wrong (and typically brighter/more washed out) than they should be.

LE10 does support HDR.

**JohnWayne111** · March 30, 2022 at 3:28 PM

Quote from popcornmix

LE9 has no support for HDR. If you play a HDR video then the colours will be completely wrong (and typically brighter/more washed out) than they should be.
LE10 does support HDR.

No, you have this case with a full HD movie, it is not depending on HDR files.

**HiassofT** · March 30, 2022 at 5:13 PM

Quote from popcornmix

LE9 has no support for HDR. If you play a HDR video then the colours will be completely wrong (and typically brighter/more washed out) than they should be.
LE10 does support HDR.

And in addition to that TVs usually have separate picture settings/prrofiles for SDR and HDR (again per port, eg on my LG TV). So even if you had set up brightness etc before, in SDR mode, that very likely won't have any effect in HDR - you need to adjust that again, separately.

so long,

Hias

**JohnWayne111** · March 30, 2022 at 5:25 PM

Im gonna repeat it...

You have the same settings on TV, AVR, ...

You have a 1080p movie and and a clean LE 9 and LE 10 install.

The picture is on LE 10 much darker.

Many users reported that issue in forums

**HiassofT** · March 30, 2022 at 5:48 PM

JohnWayne111 this thread is about 4k HDR issues (see title). If you have issues with SDR files this is very likely a different issue which should be discussed in a separate thread - don't hijack this thread.

so long,

Hias

Tolga_Sagsoz · March 31, 2022 at 12:24 PM

Eventually i flashed Libreelec 10.0.0 and the issue is gone now. Everything is visible with 4K HDR10 movies, brightness and the colors seem accurate. Now that i am sure it is not TV related.

freed · April 1, 2022 at 5:37 PM

Hello,

I'm new here and I'm glad someone has the same problem

TV: OLED77G19LA
Raspberry pi4b 4gb

After switching from Libreelec 10.0.1 to 10.0.2 all 4K movies (ISOs) are extremely dark.. I suspect it is related to "RPi4 support for 10/12bit video output".. I don't have a device between the Pi and the TV! Just an hdmi 2.1 cable. With various settings on the TV I can reduce the effect a bit, but it's no comparison to before. I also tried Libreelec 11.. same problem.. If there are any tips or I can test something for you.. gladly

I'm back to 10.0.1 now.

lg

**HiassofT** · April 3, 2022 at 2:02 PM

Please provide debug logs: enable debug logging in kodi, reboot, start playing a problematic file, then ssh in (while file is playing) and run

Code

pastekodi
modetest | pastebinit

and post the two URLs you got.

so long,

Hias

freed · April 4, 2022 at 8:22 PM

Code

hello, thanks for the quick feedback!

At the moment i couldn't reproduce it. 🤨
I'll run both versions for the next few days and pay attention.
I'll get in touch, of course, and keep reading.

Best regards

edjalmo · April 5, 2022 at 1:03 AM

Quote from Tolga_Sagsoz

Hello all. I tried couple of 4K HDR10 movies (Spider Man No Way Home, The Matrix Trilogy, LOTR Trilogy) and realized that the picture is more saturated and much darker than it is on Samsung Q60 TV's native player. Some scenes are just unwatchable. Even i fiddled with the TV settings and it is still darker. I wonder if anyone has this problem. I can confirm that TV recieves the HDR signal and it auto switches to HDR mode. I would use the native player but it doesn't passthrough Dolby True HD atmos but only DD Plus Atmos to soundbar. By the way my RPi 4 is connected to Samsung HW Q70 soundbar.
I also connected my laptop with HDMI and played HDR content without any darkness issues with the same movies.
Thank you very much.

The HDMI UHD Color is enabled on your TV?

Find and select “Settings” on your TV.
Select “General,” and then select “External Device Manager” .
Scroll and select “HDMI UHD Color.”
Select the HDMI port that your rPI is connected to turn on

mathmath51 · August 3, 2022 at 5:53 PM

Quote from HiassofT
Please provide debug logs: enable debug logging in kodi, reboot, start playing a problematic file, then ssh in (while file is playing) and run
Code
pastekodi
modetest | pastebinit
and post the two URLs you got.
so long,
Hias

Hi, I've the same issue with every 4k file I play.

Here the logs :

http://ix.io/46zk

http://ix.io/46zl

In my modest opinion, when playing 4k, it switches the hdmi black level to full instead of limited.

Hope you'll find something.

Thanks

**HiassofT** · August 3, 2022 at 11:02 PM

Remove the piracy crap repositories and addons and post another log when you have issues with legit media - you are violating forum rules that you agreed to when signing up here.

so long,

Hias

mathmath51 · August 6, 2022 at 2:51 PM

HDMI Black level - Raspberry 4 - Librelelc 10.0.2 - Limited out of the box ?

TLDR - There is a bug in the current 10.0.2 version that has been fixed in the nightly version.

Give it a try and see how it goes