How to check if TV is playing 10bit video

Help and Support Vero 4K / Vero 4K +
1

Hello,

I’ve a new TV, samsung 65Q7, and it is able to play 10bit video. I’ve some 10bit video examples and I would like to know if the video is being played with 10bit or not. Is there any way to see it? is there any log I can check?

I can see the following, ColorDeepSupport b8, from edid and I’ve set 444,10bits

20:43:41 [ root@manosmc ~]# echo “444,10bit”> /sys/class/amhdmitx/amhdmitx0/attr
20:43:46 [ root@manosmc ~]# cat /sys/class/amhdmitx/amhdmitx0/attr
444,10bit

20:43:48 [ root@manosmc ~]# cat /sys/class/amhdmitx/amhdmitx0/edid
Rx Brand Name: SAM
Rx Product Name: SAMSUNG
Manufacture Week: 1
Manufacture Year: 2017
Physcial size(cm): 142 x 80
EDID Verison: 1.3
EDID block number: 0x1
blk0 chksum: 0x59
Source Physical Address[a.b.c.d]: 3.0.0.0
native Mode f0, VIC (native 255):
ColorDeepSupport b8
97 16 31 4 19 5 20 32 33 34 93 94 95 96 101 102 98 99 100 7 22 3 18 95 94 93 98 353 352 357 358
Audio {format, channel, freq, cce}
{1, 1, 7, 7}
{2, 5, 7, 0}
{7, 5, 4, 0}
{10, 7, 7, 0}
Speaker Allocation: 1
Vendor: 0xc03
MaxTMDSClock1 300 MHz
Vendor2: 0xd85dc4
MaxTMDSClock2 600 MHz
ColorMetry: 0xc3
SCDC: 1
RR_Cap: 0
LTE_340M_Scramble: 0
HDR DeepColor
checkvalue: 0x593f0000

but after some 10bit video file:

20:45:08 [ root@manosmc ~]# cat /sys/class/amhdmitx/amhdmitx0/attr
reset

thanks

2

Turn off the HDR autoswitch option.

3

Thanks, yes, that was causing other issues.
I’ve my vero 4k connected to a yamaha home cinema RX-V477 and hdr autoswitch does not work well, I’m not able to play 10bit, HDR files with hdr autoswitch on.

Anyway, is there any way to know if the video is being played with 10bits?

4

Check the output of attr, or set it manually to 444,10.

5

If I set it manually to 444,10bit I get a black screen.

6

Then something doesn’t support 10-bit in your video chain.

Display, cables or AVR.