Oct update and 10 bit movies


#1

I have been forcing 444,10bit mode via rc local for sometime now.

I have added a # to rc local now so it doesn’t force 444,10bit.

Playing hdr movies doesn’t switch the vero into 10 bit mode like i expected it too. Hdr does trigger correctly however.

I’m using a lg b7 connected vero via soundbar.

Anyone else experiencing this?


#2

Make sure adjust refresh rate is enabled and GUI resolution is set to 1080p.


#3

How do you know it’s not 10-bit? 4k24Hz movies may play at 422 which many AVRs will report as 8-bit or not show a bitdepth at all. cat /sys/class/amhdmitx/amhdmitx0/config will show you what vero is sending to your screen.


#4

Hi Graham

Yes that’s the command i was using.
I have two Vero4k’s, one works fine, switches to 10bit the other does not. Both TV’s are lg b7’s.

One thats works fine is connected via a samsung soundbar:
@osmccinemaroom:~$ cat /sys/class/amhdmitx/amhdmitx0/config
cur_VIC: 93
VIC: 93 3840x2160p24hz
Colour depth: 10-bit
Colourspace: YUV444
Colour range: limited
EOTF: HDR10
YCC colour range: limited
PLL clock: 0xc000029a, Vid clock div 0x000b0000
audio config: on
3D config: off

One that doesn’t, is connected via a Cambridge Audio soundbar.
osmc@osmc:~$ cat /sys/class/amhdmitx/amhdmitx0/config
cur_VIC: 93
VIC: 93 3840x2160p24hz
Colour depth: 8-bit
Colourspace: YUV444
Colour range: limited
EOTF: HDR10
YCC colour range: limited
PLL clock: 0xc000027b, Vid clock div 0x000a339c
audio config: on
3D config: off


#5

Here are some logs:

https://paste.osmc.tv/axehaseyel


#6

It seems the Cambridge Audio is not passing on deep colour support to vero. You will have to continue forcing 10-bit in rc.local:

echo 10bit > /sys/class/amhdmitx/amhdmitx0/attr


#7

Thanks Graham I tried it but doesn’t seem to work.

If I run the command
sudo watch cat/sys/class/amhdmitx/amhdmitx0/attr
it reports 10 bit however if I run
cat /sys/class/amhdmitx/amhdmitx0/config
it reports 8 bit.

Playing opening scene in black panther confirms that it isn’t working as I see banding.

I am certain this all worked before prior to Oct update, as I tested it all when I edited the rc local file and used black panther as my test movie.


#8

It ought to override. We’ll check it out.


#9

I checked my cables to be sure it’s not them. Confirmed cables are fine as works when connected directly to TV.

Would you consider adding a force 10 bit mode to settings menu?