Color Settings for 4K 23~30Hz: Priority YUV444 12BIT did not work

I just got Zidoo Z9X Pro several days ago and firmware is the latest V1.0.52. I have difficulty to display the best picture of video.

1) I have selected Color Settings for 4K 23~30Hz: Priority YUV444 12BIT (see attached picture).
But I only get "YUV422 12BIT" when playing a 4K video with 25Hz (see also attached picture).
Could you direct me how to get "YUV444 12BIT" for 4K 23~30Hz video ?

2) For HDR setting, I choose "highest SDR Rec.709" according to other people's experience from Zidoo Z9X.
I am not sure if this is the best choice.

Thanks

 

Have a look at the recommended settings thread.

4K content is 10-bit 4:2:0 so there is no benefit in selecting 12-bit. I always advocate setting 4:4:4 10-bit as that's the closest available setting for 23~25Hz (10-bit 4:2:0 is not a legal HDMI mode at that frame rate)

Whether you output 12-bit 4:2:2, 10-bit 4:4:4 or 12-bit 4:4:4, the image quality is exactly the same.

Having said that, if you chose 12-bit 4:4:4 and the output is 12-bit 4:2:2 that would indicate an HDMI 1.4 display (300MHz) which cannot do 12-bit 4:4:4 (445MHz) which requires HDMI 2 as a minimum.

I assume this is the case and you do not have an HDR display because you want to convert everything to SDR, but do not use "Highest SDR Rec.709" - that's the worst possible choice since it uses the Realtek engine to convert HDR to SDR and the colour conversion is bad.

If you need to output SDR Rec.709 then use VS10.

 

Markswift2003, thanks for your response. My TV is Hisense 65H9F, see https://www.tomsguide.com/reviews/hisense-h9f
There are four HDMI 2.0a ports to handle 4K sources in this TV which also supports the two major HDR (high dynamic range) color formats, Dolby Vision and HDR 10.

Because some 4K videos can be played with fast-forward movement (I do not know why) based on TV's own player, I opt for Zidoo Z9X Pro to complement the task of
playing local files. I do not use the original HDMI cable that came with the Zidoo player, I use a 8K HD UHD HDMI cable from Amazon (I think this may be better).

So your comments "Having said that, if you chose 12-bit 4:4:4 and the output is 12-bit 4:2:2 that would indicate an HDMI 1.4 display (300MHz) which cannot do 12-bit 4:4:4 (445MHz) which requires HDMI 2 as a minimum." maybe not the correct answer for the issue.

Interestingly, for 1080P video, I select 12-bit 4:4:4 and the output is the same 12-bit 4:4:4. I feel that the quality of playing 1080P video is better than that of playing 4K video
because of the above issue.

 

Very odd - I tested here earlier on a 400MHz and a 600MHz EDID and in both cases the colour subsampling was correct for all settings.

There would be no problem with 1080p because it uses a much lower bandwidth.

The HDMI cable would make no difference.

Can you post your EDID and we'll see what's going on:

To Download EDID
================

Settings/Display/Custom EDID/Save EDID

Save to a USB stick or network location.

Change the file extension from .bin to .txt to upload to the forum

(The forum won't accept .bin files)

 

Attached 2 files are EDID and screen shot for the player.

 

Ok - there's the problem in that picture immediately - that's only showing HDMI 1.4 support...

Let me look at the EDID...

 

Ok, it's exactly as I said - the EDID only supports up to 300MHz so definitely no HDMI2.

Maybe the port you're using is HDMI 1.4 only? Maybe there's a setting in the TV somewhere?

But the Zidoo is only doing what it's told.

Have a look at the attached report, scroll down to line number 175 and you see the HDMI 1.4 datablock:

Code:

Vendor Specific Data Block (VSDB) #1
  HDMI 
    TAG=3, Length=14, OUI=000C03, A=1, B=0, C=0, D=0 
    Deep Color: 36/30 bits, Y444 
    Max TMDS Clock: 300 MHz 
    Present: Hdmi Video 
    HDMI:  3D present=No, 3D Multi-Present=0, HDMI Vic Length=4, HDMI 3D Length=0, Image Size=0 
    Vic List 
     #1 1  4K x 2K @ 29.97/30 
     #2 2  4K x 2K @ 25 
     #3 3  4K x 2K @23.98/24 
     #4 4  4K x 2K 24 SMPTE  

If this was HDMI 2 as well, there would be another Datablock in addition to this one like this showing 600MHz support:

Code:

Vendor Specific Data Block (VSDB) #2
  HDMI Forum (HF) 
    TAG=3, Length=7, OUI=D85DC4 
    Version=1 
    SCDC Present=Yes, RR Capable=No, CCBPI=No 
    LTE 340M Scramble=No, Dual View=No, Independent View=No, 3D OSD Disparity=No 
    DC 48bit 420=No, DC 36bit 420=Yes, DC 30bit 420=Yes 
    Mdelta=No, Cinema VRR=No, CNMVRR=No, FVA=No, ALLM=No, FAPA Start Location=No 
    DSC_1p2=No, DSC_Native_420=No 
    DSC_All_bpp=No, DSC_16bpc=No, DSC_12bpc=No, DSC_10bpc=No 
    Max TMDS Character Rate   = 600 MHz 
    Max Variable Refresh Rate = 0 Hz 
    Min Variable Refresh Rate = 0 Hz 
    Max FRL Rate       = 0   Fixed Rate Link is not supported per lane 
    DSC Max Slices     = 0   VESA DSC 1.2a is not supported 
    DSC Max FRL Slices = 0   no support for Compressed Video Transport 
    DSC Total Chunk kBytes = 0  

 

But Hisense 65H9F has four HDMI 2.0a ports, then what's the problem?

 

But let me reiterate, there is nothing whatsoever to be gained from 12-bit 444 vs 10-bit 444 vs 12-bit 422 since the content is 4:2:0 and there is no interpolation, only bit padding.

 

Dunno - you'll have to ask HiSense - as I say, the Zidoo is just doing what it's told.

 

https://hdguru.com/review-hisense-65h9f-4k-tv-takes-a-quantum-leap/
The H9F series TVs have a nice collection of inputs to support most common source devices. These include: 4 HDMI 2.0a inputs with HDCP 2.2 copy protection, 2 USB ports, an optical digital audio output, Ethernet (LAN) port, coaxial antenna/cable input, a set of analog composite AV inputs and a headphone jack. Audio return channel (ARC) and CEC multi-component control are available on HDMI input No. 1. The H9F models do not support HDMI 2.1 extensions such as VRR, eARC or ALLM.

I use the first HDMI port

 

I suspect there's a setting in the HiSense that "switches" HDMI 2 on - probably "enhanced mode" or something similar to that...

Denon amps have a similar setting - they don't tell you what it does, and it's default to Off but if you don't switch it on you don't get the full bandwidth over HDMI.

 

Attached 3 files are TV screen shots related to HDMI.
In picture setting, "HDMI 2.0 Format" is gray button, I can not make change.
In Advanced Setting, "HDMI Dynamic Range" is also gray button, I can not make change.
I do not know why?

 

Have you tried a different HDMI port?

 

You should be on « enhanced format » for 4k HDR. Searching in the web to try to find a solution for your problem, it looks that you are not the only one to have this issue with a Hisense TV (HDMI setting grayed out). On Amazon US, a guy from Hisense support team suggested to a guy the procedure below :

 

I have tried all 4 HDMI ports and even different HDMI cable. It still does not work.

 

Thanks for your great suggestions. It seems to be Hisense TV's issue. It is painful that all the installed app (including 3rd party app) will be removed if "reset" is performed.

 

I have activated HDMI2.0 now (see attached 3 plots including the latest EDID ) by following methods. It works well.

Now I can get "YUV422 12BIT" for a 60Hz 4K video, compared to previous ""YUV420 8BIT".

For 4K 23~30Hz: I still can not get "YUV444 12BIT ", and I only get "YUV422 12BIT".
Any ideal?


https://www.reddit.com/r/Hisense/comments/okdbfu/hisense_u6g_problem_with_hdmi_20_format/
Make sure you're on one of your hdmi inputs then hit the menu button (button with square and 2 horizontal lines) not the home button. Then you should be able to go down to format and attach it to enhanced format by clicking picture setting.

 

I have updated EDID with HDMI2 activated, see attached. Could you find out why I still can not get "YUV444 12BIT " for 23-30Hz 4K source? Thanks

 

It works here - this is using your EDID: