Dolby Vision now possible through MP4 Mux.

[kazuma]

what is exactly the difference between a regular coreelec build vs cpm build?

[SamuriHL]

His exact words:
"On your G1 LG TV the only thing you can do to calibrate Dolby Vision is with an autocal.
The rest is all blocked out by LG."

That's complete nonsense. But even if it were true, which it's not, using autocal and then not adjusting shadow detail to raise or lower black level is very wrong on an lg oled. With the equipment most home users have this is mostly a waste of time because the equipment isn't sensitive enough near black to be super useful in adjusting it correctly. For the most part anyway. A professional selling calibration better be using higher end equipment that is more sensitive near black and should be taking the time to fix those issues!! Did they at least have their own pattern generator? Or did they use the internal pattern generator? Because that can't be used to verify the calibration which is even worse.

Besides, autocal is not really the best way to calibrate an lg oled IMO. There is better software out there to do it.

As I said before, if you spend the time ripping DV or worse adding/upgrading DV to your rips, having the proper equipment to play them on matters greatly. Otherwise you're not really taking advantage of all it can offer.

Sent from my SM-S938U1 using Tapatalk

[SamuriHL]

what is exactly the difference between a regular coreelec build vs cpm build?

CPM has an additional engine that can do on the fly conversations. E.g. hdr10+ to DV, even sdr to DV or the other way around. It's very useful for playing content that your display doesn't natively support.

Sent from my SM-S938U1 using Tapatalk

[RESET_9999]

Hopefully hdr10 raised near black and dv crushed blacks will get fixed. We need to make noises on forum to get reviewers' and lg's attention.

ok after 6h hours of usage and an automatic pixel refresher cycles, the black crush has improved a lot.
in cmv4.0 I can now see 66 at 1000,4000 and 10 000 MDL and pure black is now a bit raised
in cmv2.9 I can now see 69-70 at 1000, 4000 and 10 000MDL and pure black is now a bit raised
HDR10 is worse, 65 is now way too visible but pure black screen is still black

But I noticed something very bad. In dark scenes, DV has some sort of ''falling'' noise/grain with diagonal lines. Not sure how to describe it. It's very noticeable in the 10% grayscale file, and even at normal viewing distance.
https://drive.google.com/drive/u/1/fold ... 2ZGhSXZk_D

[daffie]

His exact words:
"On your G1 LG TV the only thing you can do to calibrate Dolby Vision is with an autocal.
The rest is all blocked out by LG."

That's complete nonsense. But even if it were true, which it's not, using autocal and then not adjusting shadow detail to raise or lower black level is very wrong on an lg oled. With the equipment most home users have this is mostly a waste of time because the equipment isn't sensitive enough near black to be super useful in adjusting it correctly. For the most part anyway. A professional selling calibration better be using higher end equipment that is more sensitive near black and should be taking the time to fix those issues!! Did they at least have their own pattern generator? Or did they use the internal pattern generator? Because that can't be used to verify the calibration which is even worse.

Besides, autocal is not really the best way to calibrate an lg oled IMO. There is better software out there to do it.

As I said before, if you spend the time ripping DV or worse adding/upgrading DV to your rips, having the proper equipment to play them on matters greatly. Otherwise you're not really taking advantage of all it can offer.

Sent from my SM-S938U1 using Tapatalk

No, he did not use his own pattern generator. He only used the internal ones.
He had Klein K-10-A. Which is a meter of about 7. 000 dollars worth.
With that equipment he did an autocal for DoVi without looking at the black level and by only using the internal patterns from LG.

So, you can imagine I'm done with paying for "professionals" who think they can calibrate.
Happened also with a plasma I owned about 8 years ago.

[daffie]

Hopefully hdr10 raised near black and dv crushed blacks will get fixed. We need to make noises on forum to get reviewers' and lg's attention.

But I noticed something very bad. In dark scenes, DV has some sort of ''falling'' noise/grain with diagonal lines. Not sure how to describe it. It's very noticeable in the 10% grayscale file, and even at normal viewing distance.
https://drive.google.com/drive/u/1/fold ... 2ZGhSXZk_D

Can you maybe make a picture or gif of what you are seeing exactly ?
I can try the 10% grayscale on my LG G1 later today if you want.

[RESET_9999]

Can you maybe make a picture or gif of what you are seeing exactly ?

I tried with my phone quickly but couldn't capture it... I have to leave for work now, but tonight I'll try again with the DSLR camera

[daffie]

OK mate. Will be 8 hours until it's dark here anyway so take your time

[SamuriHL]

No, he did not use his own pattern generator. He only used the internal ones.
He had Klein K-10-A. Which is a meter of about 7. 000 dollars worth.
With that equipment he did an autocal for DoVi without looking at the black level and by only using the internal patterns from LG.

So, you can imagine I'm done with paying for "professionals" who think they can calibrate.
Happened also with a plasma I owned about 8 years ago.

The Klein is great. It should have been paired with a high end spectro to profile it against your display. And they should have, at a bare minimum, had portrait displays g1 tpg for pattern generation. The lg internal tpg is not used by anyone calling themselves a professional because it can't be used to validate the calibration results for Dolby vision. You can't know if it was made worse or better without that!

Yes I'd be done, too. That's insane. Sorry you had that experience but I can attest that a good calibration can solve many issues and present an absolutely stunning picture on an lg oled. That's why I asked about reset's g5 and if he was going to calibrate it. But he's correct to wait until at least 100 hours as he's already seeing changes. Some good, some bad which is troubling.

Sent from my SM-S938U1 using Tapatalk

[daffie]

I have to admit the picture quality for Dovi is already great out of the box.

But indeed I hoped a proper qualibration would make it even better.

Sadly that was not the case with my calibrator.

Edit:
I just looked up my conversation with him.
For the profiling he used " I1pro " and he also used a "murideo" signal generator.
No idea if that is any good or not?

Looking up some info about that I'm starting to doubt myself if he used his own patterns or not...

But the end conclusion is the same though: he did NOT check the black level because I know these patterns. And the black level was far worse than pre-calibration. Of these 2 things I'm 100% sure.

[deadchip12]

But I noticed something very bad. In dark scenes, DV has some sort of ''falling'' noise/grain with diagonal lines. Not sure how to describe it. It's very noticeable in the 10% grayscale file, and even at normal viewing distance.
https://drive.google.com/drive/u/1/fold ... 2ZGhSXZk_D

I saw falling diagonal lines on my c8 and c9 oled too a long time ago. Not sure if it is the same kind as the ones on the g5. Could you check your c2 again if you see those lines?
Users and reviewers reported say they saw diagonal lines even in bright scenes since the g4. There's a reddit thread about the issue here: https://www.reddit.com/r/LGOLED/s/lLTwRgQtyw
And also there's a thread about another issue. You may want to check for it on the g5: https://www.avsforum.com/threads/lg-g4- ... 65/page-12

[RESET_9999]

I saw falling diagonal lines on my c8 and c9 oled too a long time ago. Not sure if it is the same kind as the ones on the g5. Could you check your c2 again if you see those lines?
Users and reviewers reported say they saw diagonal lines even in bright scenes since the g4. There's a reddit thread about the issue here: https://www.reddit.com/r/LGOLED/s/lLTwRgQtyw
And also there's a thread about another issue. You may want to check for it on the g5: https://www.avsforum.com/threads/lg-g4- ... 65/page-12

I don't remember how it was on the C8, but on the C2, I definitely never noticed anything like this. I’ll check again once it’s set up in my bedroom.
On my end, this only happens in dark scenes, and the 10% grayscale pattern looks terrible in Dolby Vision. At 20% and above, it's fine.
Thankfully, it’s much less noticeable in actual content.

At least now the DV black clipping is the same as the C2 for cmv4.0 and cmv2.9 is greatly improved. No way I could see 69-70 with cmv2.9 10 000nits and 4000nits MDL on the C2

[kazuma]

does the lacking of DTS on the G5 affecting the ugoos/avr receiver? or only build-inn apps?

[RESET_9999]

Not if the ugoos is connected directly to the AVR.
Strangely the G5 edid says DTS support but I tried and it doesn't work(at least in plex).

Code: Select all

 Audio Data Block:
    Linear PCM:
      Max channels: 8
      Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32
      Supported sample sizes (bits): 24 20 16
    AC-3:
      Max channels: 6
      Supported sample rates (kHz): 48 44.1 32
      Maximum bit rate: 640 kb/s
    DTS:
      Max channels: 6
      Supported sample rates (kHz): 96 88.2 48 44.1
      Maximum bit rate: 1536 kb/s
    One Bit Audio:
      Max channels: 6
      Supported sample rates (kHz): 44.1
      Audio Format Code dependent value: 0x00
    Enhanced AC-3 (DD+):
      Max channels: 8
      Supported sample rates (kHz): 48 44.1
      Supports Joint Object Coding
    DTS-HD:
      Max channels: 8
      Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1
      Audio Format Code dependent value: 0x01
    MAT (MLP):
      Max channels: 8
      Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1
      Supports Dolby TrueHD, object audio PCM and channel-based PCM
      Hash calculation required for object audio PCM or channel-based PCM

Dovi block:

Code: Select all

  Vendor-Specific Video Data Block (Dolby), OUI 00-D0-46:
    Version: 2 (12 bytes)
    DM Version: 4.x
    Backlt Min Luma: 75 cd/m^2
    Interface: Standard + Low-Latency + Low-Latency-HDMI
    Supports 10b 12b 444: 12 bit
    Target Min PQ v2: 0 (0.00000000 cd/m^2)
    Target Max PQ v2: 3485 (2607 cd/m^2)
    Unique Rx, Ry: 0.68750000, 0.31250000
    Unique Gx, Gy: 0.24609375, 0.70312500
    Unique Bx, By: 0.14843750, 0.05078125

[SamuriHL]

Edit:
I just looked up my conversation with him.
For the profiling he used " I1pro " and he also used a "murideo" signal generator.
No idea if that is any good or not?

Looking up some info about that I'm starting to doubt myself if he used his own patterns or not...

But the end conclusion is the same though: he did NOT check the black level because I know these patterns. And the black level was far worse than pre-calibration. Of these 2 things I'm 100% sure.

Murideo is fine. It handles everything it needs to depending on the model. The fact that he didn't use that to check the calibration is concerning, though. i1pro is not a professional level spectro. I have an i1pro3 and while it's good enough for my personal use I sure as hell wouldn't charge anyone for using it to calibrate their stuff. The Klein is certainly good though.