Issues With Dolby Vision Output After March Update

Help and Support Vero V
1

Pasting my original message here for completeness:

Hi All,

I installed the update last night, and am still only being shown HDR (PQ) or HDR10+ flags on my TV when playing remuxes and/or WEB-DL’s that are confirmed Dolby Vision rendered.

My setup is Vero V > Samsung Q930D Atmos soundbar (which has been confirmed to passthrough all HDR formats including DV) to my (admittedly older but still very much DV-supporting screen, as confirmed by running UHD Netflix), a Panasonic TX50GX820B. All my cabling is also 2.1/DV-compatible.

For completeness, I also tried removing the soundbar from the equation and plugging the V directly into the TV. Same deal… HDR/PQ etc. but no DV flag. Atmos flag does show for any Atmos content, for the record.

Any ideas?

2

Logs here: https://paste.osmc.tv/nonomoqeke

During the logged session, I played back both a full UHD BD remux and a WEB-DL. Both were DV files but displayed as HDR (PQ) and HDR10+ respectively.

3

Your TV supports only LLDV which we don’t support.

DolbyVision RX support list:
VSVDB Version: V2
2160p60hz: 1
Support mode:
  LL_YCbCr_422_12BIT
IEEEOUI: 0x00d046
EMP: 0
VSVDB: eb0146d000447340824c4f7b
5

Ah, that’s a shame. Guess it’s time to upgrade! Out of interest, is there any way of easily sussing out which (more modern) screens support ‘full fat DV’ if I choose to buy a new panel? Thanks very much for the reply Graham and Sam.

6

I think they all do it now if they advertise DV support. Obviously a Samsung display won’t do it at all.

7

There doesn’t seem to be.

8

OK, thanks very much for your help guys!

9

As you’re in the UK, Richer Sounds might be a good choice. They might let you connect a device and test if it is on display.

2 Likes
10

Great idea. Thanks again, Sam

11

Sorry Graham, one more question. As my Vero was hooked up to the TV via the soundbar when I ran the log capture, is that code you’ve quoted the reported back tech specs of the soundbar or the TV itself? (or both?)

12

The video caps are those of the TV, except to the extent that the soundbar might not handle the HDMI clock frequencies needed (eg for 4k50/60Hz.). DV caps should be passed through as-is, or not at all if your soundbar is very old, but shouldn’t be altered by your soundbar. We know the GX800 is LLDV-only by the way.

13

Painful discovery

14

Thanks again, Graham. The soundbar is the 2024 model, and Richer Sounds confirmed in their exhaustive review it does indeed pass through DV unimpeded, even though it’s a Samsung product. Looks like it’s a new telly for me!

15

Every soundbar/AVR will should pass through DV because when they invented DV they made it so it would go through HDMI1.4. At that, it works up to 4k30Hz. What older ones won’t do (like my 10-yr old Yamaha) is pass through the DV caps of a TV in the EDID so that Vero knows to send DV. So I have a workaround for that :smiley:

2 Likes
16

I have a LG OLED G39 and also have troubles with green and magenta color shifts after the latest update.

But also the HLG tonemapping seems off

17

Try a different HDMI cable and/or contact cleaner on the plugs. Although that wouldn’t normally cause colour shifts it might help.

HLG should be no different to what it was. It’s fine here. No tonemapping is involved, it’s just passed through.

18

I’ve tried connecting the Vero V to the TV with a different cable (omitting the AVR and two other cables) it is the same.

Do you have any kind of known good HDR sample Files?
Than I’ll post pictures from it (and trace files)

HLG had a very strong yellow/orange/brown shift. But maybe it was the source?

20

5 posts were split to a new topic: DV won’t work through AVR

21

You could test out the Harry Potter files I still have sitting in my Dropbox from the DV testing thread.
Here’s the folder link: DV test for the Vero V

22

https://kodi.wiki/view/Samples