Dolby Vision now possible through MP4 Mux.

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SamuriHL
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Joined: Mon Jun 14, 2010 5:32 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by SamuriHL »

RESET_9999 wrote:
Thu May 01, 2025 4:38 pm
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
As you know this'll likely improve as you put some more hours on it. Once you hit 100 hours and calibrate it maybe most of this goes away with any luck.
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

SamuriHL wrote:
Thu May 01, 2025 5:28 pm

As you know this'll likely improve as you put some more hours on it. Once you hit 100 hours and calibrate it maybe most of this goes away with any luck.
I'm curious how the black crush is on your G2? Is it like my C2 crushed in cmv2.9 and way worse with 4000/10000 MDL ?
Is it perfect in cmv4.0?
SamuriHL
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Joined: Mon Jun 14, 2010 5:32 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by SamuriHL »

RESET_9999 wrote:
Thu May 01, 2025 7:35 pm
I'm curious how the black crush is on your G2? Is it like my C2 crushed in cmv2.9 and way worse with 4000/10000 MDL ?
Is it perfect in cmv4.0?
It's not perfect, no but it's not bad. I haven't checked it in a year. It's actually on my todo list. The last time I calibrated it I didn't do it the normal way as I was having issues with a new laptop at the time and had to use software I don't normally use. It came out decent so I left it. I need to redo it when I have time. I can throw spears and munsil in this weekend which as I said I need to do anyway. But I've not had any real issues after calibration. It is definitely worse in cmv2.9, though.
daffie
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Joined: Sun Apr 16, 2023 6:10 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by daffie »

@RESET

You got that picture of the greyscale 10%?
LG OLED65G1RLA / Samsung HW-Q990D / Sony UBP-X800M2 / Ugoos AM6B+ (CE with CPM Build)
daffie
Posts: 59
Joined: Sun Apr 16, 2023 6:10 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by daffie »

RESET_9999 wrote:
Thu May 01, 2025 4:38 pm
deadchip12 wrote:
Thu May 01, 2025 4:04 pm
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
No way I could see 69-70 with cmv2.9 10 000nits and 4000nits MDL on the C2
Really strange that this is better on my G1 uncalibrated.
I can see 69 faint on cmv2.9 4000 nits MDL.
And your test file called "cmv2.9 4000 nits MDL with Trims" I can see even 68 very faint.

I'm guessing something really changed starting from the c2/g2 series compared to c1/g1
LG OLED65G1RLA / Samsung HW-Q990D / Sony UBP-X800M2 / Ugoos AM6B+ (CE with CPM Build)
RESET_9999
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Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

daffie wrote:
Thu May 01, 2025 8:51 pm
@RESET

You got that picture of the greyscale 10%?
in 1h, I'm not home yet.
RESET_9999
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Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

daffie wrote:
Thu May 01, 2025 9:23 pm
Really strange that this is better on my G1 uncalibrated.
I can see 69 faint on cmv2.9 4000 nits MDL.
And your test file called "cmv2.9 4000 nits MDL with Trims" I can see even 68 very faint.

I'm guessing something really changed starting from the c2/g2 series compared to c1/g1
my C8 was the same as the C2 but Dolby did change something because the G1/C1 are the last TV to support Chroma Weight in cmv2.9, and now not even cmv4.0 CW works on the G5
RESET_9999
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Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

daffie wrote:
Thu May 01, 2025 8:51 pm
@RESET

You got that picture of the greyscale 10%?
sorry, the 5-10% grayscales are too dim. My camera cannot capture it... I have to raise ISO, which introduces noise that masks the issue.


EDIT: actually what I'm seeing is exactly like in this video:
https://youtu.be/czIxtnAh36w?si=--UggVf0iEz5VP7u&t=350
foxbat
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Joined: Mon Jun 26, 2023 11:44 am

Re: Dolby Vision now possible through MP4 Mux.

Post by foxbat »

RESET_9999 wrote:
Thu May 01, 2025 11:14 pm
daffie wrote:
Thu May 01, 2025 8:51 pm
@RESET

You got that picture of the greyscale 10%?
sorry, the 5-10% grayscales are too dim. My camera cannot capture it... I have to raise ISO, which introduces noise that masks the issue.


EDIT: actually what I'm seeing is exactly like in this video:
https://youtu.be/czIxtnAh36w?si=--UggVf0iEz5VP7u&t=350
For what it's worth I've been watching movies in DV on my 83" G5 for a few weeks now and have not been able to see the dithering effect in any content in the darkest of scenes from my seating distance of 10' away. And believe me I looked.
RESET_9999
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Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

foxbat wrote:
Fri May 02, 2025 2:28 am

For what it's worth I've been watching movies in DV on my 83" G5 for a few weeks now and have not been able to see the dithering effect in any content in the darkest of scenes from my seating distance of 10' away. And believe me I looked.
Good to know, thanks. I haven’t noticed it in the two movies I’ve watched so far, but they were both bright 4000-nit grades. I do see the falling noise in the dark scenes from Dune samples, but not the diagonal lines which I only see in static images so far. Overall, I’m satisfied with the Dolby Vision performance. HDR10 is the only mode that looks bad, but I don’t really care since all my movies are in Dolby Vision anyway.

I’ve sampled a few FEL titles that expand the brightness range, and wow, what a difference.
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Took a couple of pics from some FEL movies that expand brightness vs HDR10 (will be part of a much larger comparison on youtube): https://slow.pics/c/0Xy0y1Vw
These movies benefit a lot from a brighter TV...
SamuriHL
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Joined: Mon Jun 14, 2010 5:32 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by SamuriHL »

Maybe next year for me. I'm spending too much money this year on house repairs. But that does look promising. Maybe we'll hit 4000 at some point and be done with tone mapping altogether. I mean sure 10k but realistically if it's tone mapped to within 4000 who's really going to notice. LOL
RESET_9999
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Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Yeah, the G Series models are insanely expensive. I’m hoping I can hold off longer before upgrading again...
I got used to the ugly large vertical bars on my C2, but now that dark scenes are so much cleaner and with that incredible brightness, I think I’ll be able to resist the temptation for years.
SamuriHL
Posts: 2512
Joined: Mon Jun 14, 2010 5:32 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by SamuriHL »

That's why I'm resisting. My g2 is no slouch. I get over 900 nits on it. Paired with the ugoos it's an amazing setup. The c8 is showing its age but for a bedroom TV it works very well.

Sent from my SM-S938U1 using Tapatalk

daffie
Posts: 59
Joined: Sun Apr 16, 2023 6:10 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by daffie »

Still happy here with my G1. Upgrading will be in 2 years maybe. Definitely not before.

@RESET
ugly large vertical bars on your C2?
What do you mean with this?
LG OLED65G1RLA / Samsung HW-Q990D / Sony UBP-X800M2 / Ugoos AM6B+ (CE with CPM Build)
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