MadVR in use with LG OLED Thread

[chros]

I had to reinstall Windows 10, otherwise the vga driver went bonkers, just as it happened 3 years ago when I changed the old LG to B8. Not sure why, maybe its a bug in 1809, or some other unknown driver left back. I tried cru, ddu, nothing helped, so I screwed up 1 day from my live for this, again
But at least now it works as it should. The TV reached 6 small pixel refresh, during 26 hours, so I can slowly start testing/experimenting with thing.

[chros]

Originally Posted by aron7awol

I'd describe it as taking advantage of a bug in the latest madVR version (it exists in 159 and I don't know how far it goes back) where it doesn't re-send metadata when switching profiles, in order to achieve what we wanted. I suppose there could be something else in my system contributing.

Originally Posted by quietvoid

I'm pretty sure I remember the metadata being sent (properly set) on the first signal only on my C8.
So it's not something new.

It worked fine back in the day with my B8, not sure when it was introduced, I reported this to madhsi.

Originally Posted by Kuler087

The trick to get proper black doesnt work for me. I tried as low as -3.
Not even contrast 99 works (this worked on my C8). So far though, I did not notice raised black in real content. I noticed it all the time on my C8.

BTW, I just measured my C2 HDR10 mode, and it's very bright!!!

Yes, that's surprising! Who needs the G2 then?!
I watched DoVi content during the night and I haven't seen glowing black with the -1 settings (there were complete black screens couple of times), so that's weird that it doesn't work on the C2, although I haven't checked with patterns yet, probably soon I will.

Other stuff:
- uploading HDR10 EOTF params seems to work with bscpylgtv
- - do we know what the "EOTF: 2" means on the 2nd screen of the HostDiag screen?
- wol is working as well (after enabling wifi standby):
- - wol.exe 75:E6:B9:A4:B7:A1 /d 192.168.1.255
- Simplink is better than how it was before on B8
- I haven't noticed HDMI handshake issue (no signal screen) yet that I had with B8, but I had to replace the HDMI cable from 0.9m to 1.5m so that could solve it
- we can toggle AI Picture pro in HDR10 PC mode as well (it's greyed out), but it doesn't seem to do anything
- - bscpylgtv ... set_current_picture_settings "{"ai_Picture": "on"}" aiPicture
- I applied the gamma 2.68 SDR 3dlut with the B8 to the madvr-G2 pair, so I can raise oled light (to 85, haven't measured it how many nits it means) and get HDR look with SDR content (obviously it's not the best approach, but it can do it until I get to calibration)

That's it for now

[chros]

AI Picture Pro is working in PC mode as well, I was wrong, although it has a very slight effect, darkening shadows.

[chros]

Originally Posted by Kuler087

The trick to get proper black doesnt work for me. I tried as low as -3.
Not even contrast 99 works (this worked on my C8). So far though, I did not notice raised black in real content. I noticed it all the time on my C8.

Btw which player test files did you used for DoVi, was it the Shield with p8.1 by any chance?

[Kuler087]

Originally Posted by chros

Btw which player test files did you used for DoVi, was it the Shield with p8.1 by any chance?

nop, I used the plex internal tv app. Your G2 is pure black at -1 ? not glowing at all?

The test file I used is: ( no distracting flashing bars)
https://drive.google.com/file/d/100e...ew?usp=sharing

last night I noticed raised black for the first time in DV for Stranger things and Obi-wan. The only way I will notice it is if the picture stays completely black for more than 3 seconds. Anything shorter than that, my eyes can't adapt fast enough. This is in a perfect pitch-black room.

On the C8 I notice the raised black as soon as the screen is completely black, no need to wait 3 sec. It doesnt help that the left top/bottom corner seems to be brighter than the other side though.

[chros]

Yes, the Dovi hack works here fine and I tested lot of patterns and inputs. I didn't download yours yet, but I'll take a look at it.

[chros]

So, after watching various content in Hdr10 and PC mode: 2022 models are way better finally than 2018 were.
After checking the usual torture scenes, just as jk82 said last year already, there's no bt2020 3dlut processing issue (cyan/magenta bug), no posterization in near black content! Finally!
There is still minor banding (sending 12 bit RGB full range from PC) compared to normal mode, but I haven't noticed it from normal seating distance, so I don't care about it.
Hdr10 colors look less saturated compared to B8 (factory settings), so it's closer to what we could achieve with madvr 3dlut (that it was never correct).
Couple of shows need DTM and AIPP on the TV (eg The Expanse S01, that was upconverted from SDR by Amazon I guess) but they look great after that.
As I said it before, Hdr10 in PC mode is a bit darker compared to Normal mode (due to the smaller peak brightness, I guess), so it seems it undertacks EOTF a bit, so 2/22pt WB or 1dlut calibration is definitely needed.

Btw, how can we reboot the TV to see the WebOS logo at startup (without reset)??? I tried 5 different things at least, but I never saw the damn thing

Also, someone posted new key for 2022 models, so I'm working on the docs for it for bscpylgtv (there's no life changing change, it seems).

Sorry Kuler087, I still haven't checked your pattern, maybe tonight.

[chros]

Kuker087, I tried your sample and it works here as well using internal Plex client, so not sure what the issue is on your C2.

[Kuler087]

Thank's I'll try again this weekend, im getting closer to 100h.

[chros]

You will find more samples here, and don't use the Shield for testing

[Kuler087]

Originally Posted by chros

Kuker087, I tried your sample and it works here as well using internal Plex client, so not sure what the issue is on your C2.

ok last night I updated the firmware of my TV by mistake and noticed that DV was even more raised, more than SDR.

But then I tried the WB RGB -1 method and this time it worked .
thanks a lot.

[chros]

I'm glad to hear it! Which firmware did you use before?

[Kuler087]

I didn't check the firmware version I was on but if you update to the latest one, check out the black levels in DV: to me it is worse than ever. thankfully your WB trick works!!

[chros]

quietvoid, have you mentioned some sdr calibration issue with recent madvr betas?
I just did one @120nits with b159 plus DisplayCal, and it over brightens the image (it wasn't the case with B8 and old madvr, not sure which one).

[quietvoid]

Not sure, I just remember HDR being 2.2 instead of PQ.
I haven't calibrated the C2 yet, 2 months passed but it's not at 100 hours power-on time yet.

I'm planning on setting up a PGen and getting ColourSpace ZRO, eventually.

[SamuriHL]

PGen is definitely the way to go, especially with the new version coming out that'll handle DV calibration and verify (if LG ever fixes the damn verification mode bug on the 2022's). Fussing with madvr as a pattern gen is not really worth it. There's so many things that can go wrong (and most of them have nothing to do with madvr but more generally how the PC is configured). With PGen there's no guesswork.

[chros]

Oh, yes, now I remember you telling the hdr10 gamma level. Hmmm, thanks, I pay attention when I get there.

Not sure what happened yesterday, after replacing Argyll, madvr, css file with the old ones, now it's ok.
So I created an sdr gamma 2.68 at 234 nits (80 oled light on G2) and it looks good and as it should, but:
it's nothing compared to when I enable HLG processing on top of it! The dynamic range is brutal!!!
I'll watch sdr content like this and see how it goes.

[chros]

So, I created another gamma 2.4 3DLUT for PC mode Expert Dark (set to gamma 2.4, oled light 33) ~120nits and the resulting 3dlut again brightens the image (otherwise 3dlut is fine).
That means gamma 2.4 in PC mode overdarkens the image OOTB (I didn't have this issue with B8, although I only used it with >=4.10.25 firmwares.)

[chros]

Originally Posted by chros

So, I created another gamma 2.4 3DLUT for PC mode Expert Dark (set to gamma 2.4, oled light 33) ~120nits and the resulting 3dlut again brightens the image (otherwise 3dlut is fine).
That means gamma 2.4 in PC mode overdarkens the image OOTB (I didn't have this issue with B8, although I only used it with >=4.10.25 firmwares.)

Bloody hell, AIPP was on in the expert dark preset, that's why the 3dlut brightened the image, now all's good there as well.

[SamuriHL]

Lol! Always triple check the settings in each picture mode. I find the g2 can be a bit touchy at times. Especially switching back and forth to PC mode.

Sent from my SM-G998U1 using Tapatalk