Kodi Community Forum

(2018-02-01, 12:06)viperlogic Wrote: [ -> ]I was v close to buying an Apple TV 4K for switching functionality, but it lacks USB and ATMOS which are musts for my particular use. Moved from Shield to Vero 4K instead.

If you are using a Vero 4K for HDR - remember you need to do the command line trick to enable 10 bit output, otherwise you will have 8 bit HDR... (Yes - it's entirely possible to output 8 bit video and flag an HDR EOTF...)

(Unless I've missed an update from Sam that implements this.  You may also find some RGB/YCbCr differences in GUI - i.e. Green GUI vs correct colour video)

(2018-02-01, 12:20)noggin Wrote: [ -> ]

(2018-02-01, 12:06)viperlogic Wrote: [ -> ]I was v close to buying an Apple TV 4K for switching functionality, but it lacks USB and ATMOS which are musts for my particular use. Moved from Shield to Vero 4K instead.

If you are using a Vero 4K for HDR - remember you need to do the command line trick to enable 10 bit output, otherwise you will have 8 bit HDR... (Yes - it's entirely possible to output 8 bit video and flag an HDR EOTF...)

(Unless I've missed an update from Sam that implements this.  You may also find some RGB/YCbCr differences in GUI - i.e. Green GUI vs correct colour video) 

 Green GUI is only with 12bit output and lower then 50Hz refreshrate

(2018-02-01, 12:59)Theetjuh Wrote: [ -> ]

(2018-02-01, 12:20)noggin Wrote: [ -> ]

(2018-02-01, 12:06)viperlogic Wrote: [ -> ]I was v close to buying an Apple TV 4K for switching functionality, but it lacks USB and ATMOS which are musts for my particular use. Moved from Shield to Vero 4K instead.

If you are using a Vero 4K for HDR - remember you need to do the command line trick to enable 10 bit output, otherwise you will have 8 bit HDR... (Yes - it's entirely possible to output 8 bit video and flag an HDR EOTF...)

(Unless I've missed an update from Sam that implements this.  You may also find some RGB/YCbCr differences in GUI - i.e. Green GUI vs correct colour video)      

 Green GUI is only with 12bit output and lower then 50Hz refreshrate     

Not on my set-up it isn't.

One 4:2:0 2160/59.94p 10 bit HDR10 Rec 2020 file is output at 4:2:0 2160/59.94p 10 bit Rec 2020 HDR with an ST.2084 EOTF and renders with a green GUI over the top.

https://imgur.com/a/6xgDA

That is with <12 bit and >50Hz refresh.

However another 4:2:0 2160/59.94p 10 bit Rec 2020 HDR10 file is output at 2160/59.94p 10 bit Rec 2020 HDR with an ST.2084 EOTF and renders with a normal GUI over the top.

https://imgur.com/a/S3s7m

Only differences in the video are possibly the Mastering Diplay colour primaries and HDR metadata luminance values, and within the files are the audio formats, one is a .ts and the other a .mkv, and one was mastered with x265 as far as I can tell? Both are 4:2:0 10 bit 2160/59.94p HEVC Rec 2020 HDR PQ ST.2084...

The green OSD that isn't Kodi is the output of an HD Fury Vertex - showing the parameters of the HDMI content it is receiving.

Hmmm haven’t noticed any problems with 10bit, will test tomorrow again and will check the mediainfo

(2018-02-01, 18:26)noggin Wrote: [ -> ]Only differences in the video are possibly the Mastering Diplay colour primaries and HDR metadata luminance values, and within the files are the audio formats, one is a .ts and the other a .mkv, and one was mastered with x265 as far as I can tell? Both are 4:2:0 10 bit 2160/59.94p HEVC Rec 2020 HDR PQ ST.2084...

The second clip was mastered on a display with an unknown gamut (at least to my knowledge)   



The black filled circle represents the white point of this unknown gamut.

I'm looking for a 4K HDR box and leaning towards Vero 4K as it seems the most recommended box here, but seeing this comment it seems it has issues with this.

Will i be better to go with S905X or S912 box for 4K HDR with Atmos ? Is there a good box cheaper than the Vero 4k ?

Thanks

(2018-02-01, 20:59)wesk05 Wrote: [ -> ]

(2018-02-01, 18:26)noggin Wrote: [ -> ]Only differences in the video are possibly the Mastering Diplay colour primaries and HDR metadata luminance values, and within the files are the audio formats, one is a .ts and the other a .mkv, and one was mastered with x265 as far as I can tell? Both are 4:2:0 10 bit 2160/59.94p HEVC Rec 2020 HDR PQ ST.2084...

The second clip was mastered on a display with an unknown gamut (at least to my knowledge)   



The black filled circle represents the white point of this unknown gamut. 

Yep - ironically that's the one that renders with a GUI the right colour... (It's an x265 re-encode...)

(2018-02-01, 20:06)Theetjuh Wrote: [ -> ]Hmmm haven’t noticed any problems with 10bit, will test tomorrow again and will check the mediainfo

 Really no problems here, my file that works with 12bit has:

What frame rate and bit depth does the source file have?  And is it HDR or SDR?

(2018-02-02, 12:05)noggin Wrote: [ -> ]What frame rate and bit depth does the source file have?  And is it HDR or SDR?

 

(2018-02-02, 13:55)Theetjuh Wrote: [ -> ]

(2018-02-02, 12:05)noggin Wrote: [ -> ]What frame rate and bit depth does the source file have?  And is it HDR or SDR?

Code:

Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main [email protected]@High
Codec ID                                 : V_MPEGH/ISO/HEVC
Width                                    : 3 840 pixels
Height                                   : 2 076 pixels
Display aspect ratio                     : 1.85:1
Frame rate mode                          : Constant
Frame rate                               : 59.940 (60000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.058
Writing library                          : x265 2.5+27-0e168bdeb48b:[Windows][GCC 6.2.1][64 bit] 10bit
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : Display P3
Mastering display luminance              : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level              : 2086 cd/m2
Maximum Frame-Average Light Level        : 997 cd/m2

Interesting. That - like the one that plays with the correct coloured GUI on my Vero 4K - is mastered in x265.

Are there any hints or roadmap for Libreelec/Kodi HDR on Intel Kaby Lake?

___________
My website:  xăm lông mày có phá tướng không

Get info straight from the Intel Linux/LibreELEC developer @Milhouse over HERE

A warning you will Not like what you read.

Is there any options for splitting the video and audio for 4k HDR content? I still have an older Pioneer 1080p receiver thats works great, but I want to be able to get 4k HDR content with Kodi and still receive DTS-MA/True-HD audio from my rips.

(2017-12-08, 02:47)wrxtasy Wrote: [ -> ]What would be interesting is if you connected that LE S912 box again to your Epson PJ and then SSH Logged in and issued a:

Code:

cat /sys/class/amhdmitx/amhdmitx0/disp_cap

You can then see exactly what HDMI EDID negotiated display and colorspace modes the S912 is reading from the Epson PJ.
These can then be tweaked and put in a disp_cap file in the .kodi/userdata folder when using LE.   

 Hey @wrxtasy, got myself another S912 box, a Tanix TX92, to try w/my Epson 5040UB. So, when I SSH that command, where do I see the results of what 4K modes might work? Thanks.

I just tried doing these and still get 8-bit playback of 10bit HDR content...
echo '444,10bit' > /sys/class/amhdmitx/amhdmitx0/attr
echo '444,12bit' > /sys/class/amhdmitx/amhdmitx0/attr
echo '420,10bit' > /sys/class/amhdmitx/amhdmitx0/attr
echo '420,12bit' > /sys/class/amhdmitx/amhdmitx0/attr