Dolby Vision now possible through MP4 Mux.

[RESET_9999]

Btw, is profile 5 content is also affected? (not that I want to use them on the Oppo, just curious) I'll check again the lelabodejay samples...

because of the dynamic color reshaping in P5, it can be hard to delay the rpu but I compared lelabodejay pattern again last night and didn't really see any difference.

same with the fixed luma version P5 of the "mutli_pattern" from original spears and munsil
https://drive.google.com/file/d/1GRWWow ... sp=sharing
I checked HDR10 too and it clips a lot more than DV and maybe there's something going on with the ST2084 tracking in HDR10?

[chros]

Yes, I think it's a DoVi engine bug only on C1/C2 (not CX) with cmv2.9 devices, simple as that

Makes sense, I guess the firesticks are affected too. I just don't have another device to compare against to know for sure.

You remember when I had the B8 and Firestick 4k (old one) and I told you guys that the resulting image was different compared to the Oppo/Plex, it was darker on the Firestick somehow.
Is the Max version cmv4.0? In other words is your cmv4.0 sample has any effect on it?

So, I've been thinking about this more, what we know is:
- L1 data is arrived to the TV: there's a slight change in the image
- this can mean what I thought is: DoVi engine deals with the old devices differently
- or: L1 data gets truncated somehow: but this scenario is very unlikely, since L2 is not?

I checked real content(3 movies) and I couldn't really spot a difference in the brightness changes. (i wonder if the difference could be L4 ?)

That's not a good news What do you mean about L4?

Today I'll put back side by side my C8/C2 and make a more direct comparison.

Cheers, that would be really helpful! We only have to find 1 example with true content where the issue is clearly present, after we can think it over by examining the RPU itslef.

Btw, is profile 5 content is also affected? (not that I want to use them on the Oppo, just curious) I'll check again the lelabodejay samples...

because of the dynamic color reshaping in P5, it can be hard to delay the rpu but I compared lelabodejay pattern again last night and didn't really see any difference.

same with the fixed luma version P5 of the "mutli_pattern" from original spears and munsil
https://drive.google.com/file/d/1GRWWow ... sp=sharing
I checked HDR10 too and it clips a lot more than DV and maybe there's something going on with the ST2084 tracking in HDR10?

Yes, I don't recall much difference with lelabodejay pattern either, that's why I asked about it. I'll try to recheck it soon. I'll also check that pattern.
Not sure about the HDR10 version (I don't have it), what is the metadata for it? (mdl, maxcll, etc)

There's only a big difference when I generate DV from HDR10 or HDR10plus and with quietvoid's pattern so I don't know what's going on

There's a only one more possibility in my book: that "only" profile 8.1 content is affected somehow
We will know this for sure when/if we find a true example.
The hunt is on!

[quietvoid]

Is the Max version cmv4.0? In other words is your cmv4.0 sample has any effect on it?

No, it only reacts to L2.

[chros]

Is the Max version cmv4.0? In other words is your cmv4.0 sample has any effect on it?

No, it only reacts to L2.

Nice, thanks, didn't know that! So at least it's similar than the rest of the problematic devices.

[RESET_9999]

That's not a good news What do you mean about L4?

@quietvoid, (i think) once said that it's supposed to help with the transition between shots. The pattern doesnt have L4, the madvr/hdr10plus generated DV too.

Not sure about the HDR10 version (I don't have it), what is the metadata for it? (mdl, maxcll, etc)

The HDR10 version I'm talking about is the original BL from SM. The one with strange LUMA that affects DV on the shield and our 2022 TV but strangely it doesnt affect HDR10.
it's encoded at 1000/400 but it's actually 10 000nits.

There's a only one more possibility in my book: that "only" profile 8.1 content is affected somehow

can't be, because the 3 movies I tested last night were all converted to P8.1 and didn't have any noticeable difference. I didn't test P7.

Also, I just learned that the C9 is supposed to have the newer cmv4.0 Dolby engine. So @deadphil, you should check it out.

We will know this for sure when/if we find a true example.

well, even without a real content example, I don't feel safe watching movies on my x800m2 anymore.
Patterns are not movies but they are always a good indication that something is going on, extremely (or barely) noticeable, it doesnt matter to me.

[chros]

Not sure about the HDR10 version (I don't have it), what is the metadata for it? (mdl, maxcll, etc)

The HDR10 version I'm talking about is the original BL from SM. The one with strange LUMA that affects DV on the shield and our 2022 TV but strangely it doesnt affect HDR10.
it's encoded at 1000/400 but it's actually 10 000nits.

So, another messed up encode from that disc

There's a only one more possibility in my book: that "only" profile 8.1 content is affected somehow

can't be, because the 3 movies I tested last night were all converted to P8.1 and didn't have any noticeable difference. I didn't test P7.

Hmm, indeed.

Also, I just learned that the C9 is supposed to have the newer cmv4.0 Dolby engine. So @deadphil, you should check it out.

I bet it doesn't have the issue, unless the DoVi engine was updated recently in the C9 firmware. Let's see...

We will know this for sure when/if we find a true example.

well, even without a real content example, I don't feel safe watching movies on my x800m2 anymore.
Patterns are not movies but they are always a good indication that something is going on, extremely (or barely) noticeable, it doesnt matter to me.

I agree with you completely!

[ragico]

Are these people (Dolby, Sony, Lg etc) joking with us?
This behaviour will discourage a lot of people.

[chros]

Here's a higher brightness L1 test video: https://0x0.st/ojA5.mkv
The image is a lot brighter than what the OLEDs are capable of, and the metadata reflects that.

So we have MDL at min 0.0050, max 4000 nits.
MaxCLL 5640 nits.

This works well on my FireTV Stick 4K Max + LG C2, every change in L1 has an effect similar to the internal player.
Let me know if it makes any difference for UHD BD players.

yep as soon as L1 is alone, big difference.

https://slow.pics/c/uF3dr3YN

DSLR camera settings locked

So it doesn't react when there's L2 present only?
The TV only looks dimmer in the photos, but the clipping is the same..

That's weird. The L2 is all set to 2048, though. I think usually real metadata has one of them at like 2049.
I doubt it would work, though.

Another thing might be that there's L2 up to 4000 nits, so maybe that does something too.

So it doesn't react when there's L2 present only?
The TV only looks dimmer in the photos, but the clipping is the same..

There's a big different too when l2 is present but I think it's not as obvious as in the L1(no L2) scene. or maybe im dreaming
with the internal player, the L1 (no L2) scene is a lot brighter and more clipped than the x800m2. Roughly the same difference as in your first 1000nits pattern.

I just checked this high brightness sample: all the trims are changing on the Oppo as well (!), just as you said, but as Reset said it looks different compared to internal Plex, not sure which is right ...

The previous test was at max 1000 nits, so it's possible some bypassing might happen if the player looks at the EDID, or the TV looks at some other metadata.
I'll have to test modifying the L6 metadata to see if it makes any difference.

In the end, it seems that HDMI input players may just be tracking PQ when *some* metadata is within the capabilities of the display, instead of clipping according to L1 like the internal player.

Now that's an interesting theory! But why the Shield is different?

[chros]

same with the fixed luma version P5 of the "mutli_pattern" from original spears and munsil
https://drive.google.com/file/d/1GRWWow ... sp=sharing

I checked this P5 one as well: bit more clipping on the Oppo and noticeably darker image! (Again, not sure which is right)

[deadchip12]

@RESET_9999

So I just used the .ts video (https://drive.google.com/file/d/1hAv4eJ ... sp=sharing) you posted on avsforum to test on my c9.
The image changes very differently on the c9's internal player compared to the x700, for both L1 and L2. Even worse is during the brief black screen transition, it's completely black on the internal player, but on the x700 there are two grey bands on top and bottom (I notice that in your x800m2 + C2 video as well). I don't know what's going on here.

This sucks. Did I just watch the whole Dolby Vision library with sub optimal image quality? But there's no alternative either.

And people who are testing this on their tv, remember to set the same picture settings for both inputs: your tv's internal player and your bluray player. I'm using Cinema picture mode for both.

[RESET_9999]

@RESET_9999

So I just used the .ts video (https://drive.google.com/file/d/1hAv4eJ ... sp=sharing) you posted on avsforum to test on my c9.
The image changes very differently on the c9's internal player compared to the x700, for both L1 and L2. Even worse is during the brief black screen transition, it's completely black on the internal player, but on the x700 there are two grey bands on top and bottom (I notice that in your x800m2 + C2 video as well). I don't know what's going on here.

This sucks. Did I just watch the whole Dolby Vision library with sub optimal image quality? But there's no alternative either.

And people who are testing this on their tv, remember to set the same picture settings for both inputs: your tv's internal player and your bluray player. I'm using Cinema picture mode for both.

interesting result... Sorry for calling you @deadphil earlier, I mixed you up with someone else lol.
As for the grey black bars, it's because the pattern is cropped. You'll get the same issue if you play any cropped content.

[deadchip12]

@RESET_9999

So I just used the .ts video (https://drive.google.com/file/d/1hAv4eJ ... sp=sharing) you posted on avsforum to test on my c9.
The image changes very differently on the c9's internal player compared to the x700, for both L1 and L2. Even worse is during the brief black screen transition, it's completely black on the internal player, but on the x700 there are two grey bands on top and bottom (I notice that in your x800m2 + C2 video as well). I don't know what's going on here.

This sucks. Did I just watch the whole Dolby Vision library with sub optimal image quality? But there's no alternative either.

And people who are testing this on their tv, remember to set the same picture settings for both inputs: your tv's internal player and your bluray player. I'm using Cinema picture mode for both.

interesting result... Sorry for calling you @deadphil earlier, I mixed you up with someone else lol.
As for the grey black bars, it's because the pattern is cropped. You'll get the same issue if you play any cropped content.

Ah ok so the x700 shows grey bars with cropped contents, but the internal player doesn't?

On another note: If I go to the General>About This TV>TV Information and scroll down to Dolby Vision, it says 21.26 there. What is yours on the C2 and C8?

Are there any more tests that I can do? In the last few pages, it seems there are several test videos, quite confusing. Which one should I use?

[chros]

Btw Jellyfin (opensource "Emby") was recently released for WebOS on 2021-2022 models in LG Appstore!
Install portable on windows:
- download combined portable zip from: https://repo.jellyfin.org/releases/serv ... ws/stable/
- follow: https://jellyfin.org/docs/general/admin ... ion-x86x64
- access the interface via: http://127.0.0.1:8096/
- if an auto connect server is there and you can't connect with it, then just delete that server and refresh the page

batch file:

Code: Select all

cd "%~dp0"
system\jellyfin.exe -d data

I only tried couple of files DoVi mp4 files, those worked, couple of test files didn't, and we can't set the color of subtitle, but nice to have options.

[deadchip12]

Here are the videos for comparison on my C9:
X700:
https://youtu.be/MC0HxMV3LXM
Small changes with L1. Noticeable changes with L2, except no changes with L2 trim_offset 0.75

Internal player:
https://youtu.be/28TkcoPaUzc
Noticeable changes with L1. Noticeable changes with L2, especially big change with L2 trim_offset 0.75.

[Redox]

@RESET_9999

I tried RPU p8.1 cmv29 file using Panasonic Oled internal player(new dolby engine) ,Fire Tv Max and Oppo

I noticed brightness deference in L1 and L2_trim_offset 0.75 with Oppo player the internal player and fire tv look the same