Dolby Vision now possible through MP4 Mux.

[chros]

thank you, yes i know this guy, I'm French too ... hat's me @TbeRw01 on bluray forum

Nice, so you could listen the undubbed version And thanks for the profile8 version of spears's sample and all the other testing you guys have done!

Firestick 4k + patched Kodi ... And indeed there's no banding/posterization, so my theory was wrong: Firestick 4k also triggers tv-led DoVi with our 2018 LG.
To add another variable into the mix
We know now that Firestick also triggers TV-Led Dovi with 2018 LGs, but the whole image is noticably darker, e.g. compared to internal apps.
Here's the profile 8.1 version of Spears's black clipping DoVi pattern, so I fired it up on FIrestick and Oppo as well (Plex didn't recognised it, dunno how that works):
- Oppo: 72 barely flashing
- Firestick: 81 barely flashing!!!

But it's not just the low end that is affected, the whole image seems to be a bit darker, it's like double-expanded is set in madvr ...

So, guys, if you like, you can also try this out (in a pitch black room) with your display and other devices to see how they behave.

I also compared my devices with this pattern and the x700, the Shield, the Ugoos, and my C8 internal app all start crushing black at the same 70-72.

Thanks for this, so it's the firestick ...
And I also managed to check this via Plex (I had to separate categories), and that's also fine (~>=72 is blinking).

Using the same clip in HDR10 I can see flashing 65-66 on all my device. hows HDR10 on the firestick?

Just checked and that's fine in normal mode (PC mode clips black, only >=76 is visible, but that happens with all the sources).

HDR10 on the Firestick is fine, the near black issue is just a problem for Dolby Vision.
I can't really remember but I think mine only crushed black below 83 when using brightness 49, but contrast 99 should be a lot better.

Can you check with the profile8 clip with default settings? (brightness 50, contrast 100, oled light 50)
The Pulsar 0.005 nits rectangle is also clipped at the middle top, I hope you will get the same ~70 result, that would mean a firestick setting is responsible for my 81 result ...

I'm reading comments about the same issue with the newer CX and C1 TV so I guess it's a Dolby problem. I wonder if it's also crushed on Sony and Panasonic TV, of course as you said, you need to have a pitch-black room.

I just asked couple of owners over doom9, so we will know more soon.

contrast 99 ... yes, that works very well to fix the raised black I was getting with DV content. ... and it doesnt affect the shadow details nor the colors at all... Netflix ending credits are now truly black instead of grey. It even works for Atomic Blonde BD which I used to find unwatchable in DV.

Unfortunately, it does not, it produces hue shift.
But the near black glowing (if you have it) can be eliminated with custom 1dlut!

In the past months, I've been enjoying DV on my C8 more than ever before

That's interesting you mentioned this, because I started to enjoy HDR10 on our 2018 LG in the last couple of weeks, since madvr added 3dlut support for hdr10 output! You can read it from here (only couple of pages discussion): basically we got a new TV for hdr10!

[deadchip12]

HDR10 on the Firestick is fine, the near black issue is just a problem for Dolby Vision.
I can't really remember but I think mine only crushed black below 83 when using brightness 49, but contrast 99 should be a lot better.

When I play dolby vision mp4 films on an external hdd connected to my oled, in near black areas I can almost see a strange line pattern continuously run diagonally. Very weird. Do you see the same thing?

[quietvoid]

When I play dolby vision mp4 films on an external hdd connected to my oled, in near black areas I can almost see a strange line pattern continuously run diagonally. Very weird. Do you see the same thing?

Never seen anything like what you're describing.

[glc650]

I also compared my devices with this pattern and the x700, the Shield, the Ugoos, and my C8 internal app all start crushing black at the same 70-72. I'm reading comments about the same issue with the newer CX and C1 TV so I guess it's a Dolby problem. I wonder if it's also crushed on Sony and Panasonic TV, of course as you said, you need to have a pitch-black room.

I have a Sony XBR-75Z9F which does LLDV only. What do I need to test for this? I have a M800X2, Apple TV 4K (gen 2) and PC with madVR (HDR10 only obviously, plus the apps on the TV to use as sources.

[RESET_9999]

Unfortunately, it does not, it produces hue shift.
But the near black glowing (if you have it) can be eliminated with custom 1dlut!

That's interesting you mentioned this, because I started to enjoy HDR10 on our 2018 LG in the last couple of weeks, since madvr added 3dlut support for hdr10 output! You can read it from here (only couple of pages discussion): basically we got a new TV for hdr10!

very interesting , thank you for sharing.

I have a Sony XBR-75Z9F which does LLDV only. What do I need to test for this? I have a M800X2, Apple TV 4K (gen 2) and PC with madVR (HDR10 only obviously, plus the apps on the TV to use as sources.

You have to check the pattern in the complete dark. Let your TV warm up for a couple of minutes and also let your eyes adapt to the darkness.

64 is completely black and you won't see it flashing unless you have raised black levels. You should see flashing starting at 66 for ideal shadow details. 65 is almost impossible to notice.
The problem with the C8 ( and CX/C1 from what I can read), is that it starts crushing black at 72ish in DV.
HDR10/SDR levels are correct, I can see 66 flashing.

@lexyz and @ragico . How does it look on your TVs?

dv p8 / p5 and sdr patterns:
https://drive.google.com/file/d/1lSDM0X ... sp=sharing
https://drive.google.com/file/d/1ZfChHk ... sp=sharing
https://drive.google.com/file/d/1jwDN_E ... sp=sharing

[deadchip12]

When I play dolby vision mp4 films on an external hdd connected to my oled, in near black areas I can almost see a strange line pattern continuously run diagonally. Very weird. Do you see the same thing?

Never seen anything like what you're describing.

Very hard to describe what I see. It can't be captured on camera either. Need to watch the oled in a pitch dark room and then you will see such pattern. I have owned the c7, c8, and c9; all have this issue. It drives me nuts. I remember one guy on avsforum posted about the same thing a while ago but most people didn't notice it on their sets so they ignored his post.

[deadchip12]

Since you own a sony x700 bluray player, may I ask whether the usb port is 2.0 or 3.0? If I want to play movies on an hdd connected to that usb port, does the hdd need to be formatted as fat32 and need to be usb 2.0?

[RESET_9999]

Since you own a sony x700 bluray player, may I ask whether the usb port is 2.0 or 3.0? If I want to play movies on an hdd connected to that usb port, does the hdd need to be formatted as fat32?

usb 2.0 but more than fast enough. NTFS works.

I think I might have found one difference with appleTV profile 5 web-dls that could explain the color difference we noticed here .
I looked at the mediainfo of a couple of the appleTV p5 rip and they are all missing the color range flag FULL . this includes even the rip from itunes, not only the appleTV+ original. you can tell they are from itunes because they are also cropped (often overcropped). I think something is not right with either the way they rip appletv or the way Appletv files are encoded.

[quietvoid]

I think I might have found one difference with appleTV profile 5 web-dls that could explain the color difference we noticed here .
I looked at the mediainfo of a couple of the appleTV p5 rip and they are all missing the color range flag FULL . this includes even the rip from itunes, not only the appleTV+ original. you can tell they are from itunes because they are also cropped (often overcropped). I think something is not right with either the way they rip appletv or the way Appletv files are encoded.

Wouldn't be the first time Apple has weird files: https://github.com/quietvoid/dovi_tool/ ... -851080568
Could be interesting to look at the HEVC params see if it's really signaling limited..

edit: VUI don't signal full range but they're apparently optional.
The difference would be trivial to test by reencoding the profile 5 files with everything properly set.

[deadchip12]

What's the general consensus here on the Dune 4k hdr bluray players? Can they play m2ts films stored on external hdd reliably? In my countries only bluray players from Sony and Dune are available so I'm looking at either the x700 or the Dune Pro Vision (which is twice as expensive as the x700 so I'm leaning towards the sony).

[RESET_9999]

What's the general consensus here on the Dune 4k hdr bluray players? Can they play m2ts films stored on external hdd reliably? In my countries only bluray players from Sony and Dune are available so I'm looking at either the x700 or the Dune Pro Vision (which is twice as expensive as the x700 so I'm leaning towards the sony).

Dune can't do FEL DV.
The best players for lossless DV rips are still the oppo and the x700 (or x800m2).

edit: VUI don't signal full range but they're apparently optional.
The difference would be trivial to test by reencoding the profile 5 files with everything properly set.

yep, I'm going to try that.

[RESET_9999]

deleted

[lexyz]

@lexyz and @ragico . How does it look on your TVs?

Will check next weekend


The best players for lossless DV rips are still the oppo and the x700 (or x800m2).

Both have LLDV issues
Oppo is inaccurate in DV output after HDR10 playback.
X700 can't auto switch to DV

Sadly, any DV-capable device has issues

[chros]

I looked at the mediainfo of a couple of the appleTV p5 rip and they are all missing the color range flag FULL . this includes even the rip from itunes, not only the appleTV+ original.

Interesting. Although I think it's different with Firestick, since I see the same from the normal apps as well (Netflix, ATV+, Disney+): it's indeed like a double expansion, like you set brightness to 49 on LG Oled in DoVi preset.

@quietvoid, can you try out the profile8 sample on yours, which one is blinking for you using Kodi, 81?

Oppo is inaccurate in DV output after HDR10 playback.

Do you know how to replicate the issue where it's clearly visible? (e.g. with sample, etc) I've read all the comments over bluray.com, but still don't understand/see the actual issue. Thanks

[RESET_9999]

I thought first that the signal was just set ''undefined'' but madVR is saying the stream is sending a limited flag when I play the original file. It would say ''best guess'' if it was really set to ''undefined''.

I will first try to add the flag FULL with mkvtoolnix which seems to have worked (at least with madVR).

Code: Select all

mkvmerge.exe -o D:\test.mkv --colour-range 0:2 D:\input.mkv

original / mkv edit