How to enable 10bit on s912 kszaq 8.1.3?

Wizzi07 · August 6, 2017 at 10:40 PM

Hi would somebody please be able to tell me how to enable the 10bit output as described here:..

10bit output on capable hardware:

On a new boot before any other playback has been performed, run the following: echo '444,10bit' > /sys/class/amhdmitx/amhdmitx0/attr
This only needs to be set once each boot, so it can be put in /storage/.config/autostart.sh
This shouldn't affect any 8 bit output either and can be set unconditionally (as above).
Testing has been very limited thus far.

my device is mecool m8s pro s912

Thanks in advance!

delz · August 7, 2017 at 3:37 AM

SSH terminal?

ozkaradag · August 7, 2017 at 11:31 AM

Yes, for SSH.

Best regards...

Wizzi07 · August 7, 2017 at 2:54 PM

I know I need to use ssh.. I've downloaded putty and I can connect to my s912 device using the ip address and username :root password: openelec but I do not know how I run the command and put it in the autorun folder?

ozkaradag · August 7, 2017 at 4:36 PM

Password: libreelec

Port: 22

Best regards...

**vpeter** · August 7, 2017 at 4:57 PM

Code

echo "echo '444,10bit' > /sys/class/amhdmitx/amhdmitx0/attr" >/storage/.config/autostart.sh

Run this command only once or command will be called multiple times (no harm probably).

Check file content with

Code

cat /storage/.config/autostart.sh

Wizzi07 · August 8, 2017 at 3:13 PM

Quote from vpeter
Code
echo "echo '444,10bit' > /sys/class/amhdmitx/amhdmitx0/attr" >/storage/.config/autostart.sh
Run this command only once or command will be called multiple times (no harm probably).

Check file content with
Code
cat /storage/.config/autostart.sh
thankyou for your help! does this mean it has worked?...

Wizzi07 · August 8, 2017 at 3:24 PM

just rebooted my box after running the command and now it shows the loading screen then when it would normally load kodi i just get a black screen? the tv is definitely 10bit compatible its a panasonic 65dx902b.

pepeq · August 10, 2017 at 7:02 AM

to be sure do

0. ssh to your box

1. chmod 755 /storage/.config/autostart.sh

2. reboot

3. check with:

cat /sys/class/amhdmitx/amhdmitx0/attr

pepeq · August 10, 2017 at 7:06 AM

BTW:

with my S905X-box I do not need to execute the 'cat 444,10bit'-command.

HDR-content is displayed correctly on my TV.

The problem with a black screen can also be caused by a AVR between your box and the TV.

Try to connect your box to the TV-HDMI post directly.

Wizzi07 · August 14, 2017 at 10:58 AM

If somebody could help me out with this I'd really appreciate it :)... I did the command over ssh and now when it boots I get the librellec logo then when kodi would normally start I get a black screen. I have purchased a new hdmi 2.1 cable and connected directly to the tv but it's still the same.. is there any way I can make this box work with 10bit or how can I set it back to normal so I can atleast get my picture back

Thanks

ChimeyJimmey · August 14, 2017 at 12:50 PM

Log in again via SSH and rename/remove the ".config/autostart.sh" file.

Reboot and watch what happens.

Wizzi07 · August 14, 2017 at 3:30 PM

Thanks for the reply! I'm a complete noob, I know how to log into ssh but I don't know what command I need to run to rename it or remove it?

ChimeyJimmey · August 14, 2017 at 4:03 PM

For example:

Code

# cd /storage/.config/
# mv autostart.sh autostart.sh.bak
# reboot

And do NOT type the "#" symbol, it's just a prompt sign...

Wizzi07 · August 14, 2017 at 4:05 PM

thankyou! ive got it working again now! do you know why i would get a black screen when i set it to 10bit? is a mecool m8s pro s912 device connected to panasonic dx902b

ChimeyJimmey · August 14, 2017 at 4:29 PM

For that you'll have to provide the Kodi crashlog.

This would assume that you revert back the setting, which crashes Kodi initially, wait for the black screen and then get the latest

"kodi.log" or "kodi_crash.log" from the following folder:

Code

# ls -lAh /storage/.kodi/temp

Most probably there is an incompatibility between Kodi screen settings and your TV HDMI settings.

Here's a list of DX900 screen resolution capabilities:

Quote

4:4:4 / 4:2:2 - 30p, 25p, 24p

4:4:4 / 4:2:2 / 4:2:0 - 60p, 50p

4096x2160 - 60p (displayed as 3840x2160)

4096x2160 - 50p (displayed as 3840x2160)

4096x2160 - 30p (displayed as 3840x2160)

4096x2160 - 25p/4:4:4 (10, 12 bit) (displayed as 3840x2160)

4096x2160 - 24p/4:4:4 (10, 12 bit) (displayed as 3840x2160)

3840x2160 - 60p

3840x2160 - 50p

3840x2160 - 30p

3840x2160 - 25p/4:4:4 (10, 12 bit)

3840x2160 - 24p/4:4:4 (10, 12 bit)

-

HDR 3840x2160 – 10 bit colors – BT.2020 color space – 4:2:0 – 75.6 Mbps bitrate – 59.940fps – HEVC (Main10@L5.1) - .mp4 file

HDR 3840x2160 – 10 bit colors – BT.2020 color space – 4:2:0 – 56.4 Mbps bitrate – 23.976fps – HEVC (Main10@L5) - .mp4 file

HDR 3840x2160 – 10 bit colors – BT.2020 color space – 4:2:0 – 60.3 Mbps bitrate – 23.976fps – HEVC (Main10@L5) - .mp4 file

3840x2160 – 23.976fps – 10 bit colors - BT.709 color space – 4:2:0 – 51.4 Mbps bitrate – HEVC - .ts file

3840x2160 – 8 bit colors – YUV color space – 4:2:0 – 50.0 Mbps bitrate – 29.970fps - AVC - .mp4 file

3840x2160 – 10 bit colors – YUV color space – 4:2:0 – 23.1 Mbps bitrate – 50fps - HEVC - .ts file

2560x1440 – BT.709 color space – 4:2:0 – 6.54 Mbps bitrate – VP9 - .mkv file

3840x2160 – BT.709 color space – 4:2:0 – 12.71 Mbps bitrate – VP9 - .mkv file

1920x1080 – 8 bit colors - YUV color space – 4:2:0 – 2.5 Mbps bitrate – 60fps - HEVC - .ts file

1920x1080 – 8 bit colors - YUV color space – 4:2:0 – 60fps - 2.2 Mbps bitrate – HEVC - .mkv file

1920x1080 – 8 bit colors – BT.709 color space – 4:2:0 – 98.3 Mbps bitrate – AVC - .mkv file

Display More

So,

you might need to tweak the TV HDMI input settings as well, to match the signal parameters, which the media box is providing it (UHD, YUV 4:4:4 and etc)...

How to enable 10bit on s912 kszaq 8.1.3?

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