Resolved Frame drops / black Screen with 2160p and 23.976Hz video

Discussion in 'ZIDOO X9S' started by Winicjus, Jan 17, 2017.

  1. Winicjus

    Winicjus New Member

    Firmware: 1.2.10 and earlier.
    Settings:
    HDMI Mode: 3840x2160p 60 Hz
    Deep Color mode: Auto or 12bit or 10bit
    Color Space mode: Auto or YCbCr 444 or YCrCb 420
    Auto23.976/24 enabled

    With this settings I get after every 40 seconds a black screen for 1 -2 seconds. somtimes earlier or later.
    You see on TV that the box has changed to 2160p and 23.976

    What works:
    - Disable Auto23.976/24 -> the movie will run with 60Hz. The are some micro shutters
    - Set HDMI Mode to 1080P 60Hz -> bad for 4k content
    - Set Deep Color mode to off -> bad for HDR content
    - Switch color Space mode to RGB 444 -> in black parts of a movie I get white pixel errors like snow
    At the moment the best option:
    Switch to YCbCr 422 -> Seems to work fine, but I think that the colors are not so strong. will test it.

    Is YCbCr 444 and 23.976Hz a hardware limitation or problem? Can you fix it?
     
    Last edited: Jan 18, 2017
  2. jo23

    jo23 Member

    I have exact the same problem. With the exception that 422 causes has the same issues as 444 - blank screens.
     
  3. Winicjus

    Winicjus New Member

    Which firmware do you use? I think, that I had also Problems with 422 and older firmware.
     
  4. jo23

    jo23 Member

    There is a change in 1.2.10.
    With 1.2.10 there is no 10bit output with 422 so there are no black screens :).

    With 4K/23,976/10Bit/YCrCb444 i have black screens in android apps too.
     
  5. jo23

    jo23 Member

    Zidoo come on, your internet page you says:
    Real 23.976 fps .... 4K UHD .... 10-bit color

    I must admit, you dont say that theese are possible at the same time.
     
  6. Winicjus

    Winicjus New Member

    Really no 10 bit? My TV LG 55E6D plays HDR correctly. I see the switch to HDR.
    Out of my TV I get the following information
    2160P, BT2020, HDR.

    HDR is 10bit and not 8bit, isn´t it?
     
  7. jo23

    jo23 Member

  8. Winicjus

    Winicjus New Member

    You are right. I tested the settings with the test movies. With the 422 settings you didn´t see any differnces between 8bit and 10bit pictures. With the 444 setting the 10bit pictures shows a smooth transition from one gray color to another.
    I had the opinion, that the movies looks with 444 a little much better then with 422. That should be the reason way.
    I need an answer from Zidoo immediately. Is this a software bug or a hardware limitation?

    This feature is a K.O. feature for me!
    Perhaps I should send the Zidoo 9xs back (has time until 31.01.2017) and buy a himedia Q10pro.
     
  9. Winicjus

    Winicjus New Member

    Did you tried the following setting?
    HDMI Mode: 3840x2160p 24 Hz
    Deep Color mode: Auto or 12bit or 10bit
    Color Space mode: Auto or YCbCr 444 or YCrCb 420
    Auto23.976/24 disabled

    Seems to work for me, Did not found any micro shutters at the moment. Will take tomorrow a closer look. I will test the Box with another 4K HDR TV, too
     
  10. jo23

    jo23 Member

    2160p/24Hz/YCrCb444/10bit is working, however you may experience shutters from time to time. I have a Samsung KS8080.
     
  11. Winicjus

    Winicjus New Member

    I have a LG55E6D. Do you have enabled UltraHD Deep Color on the connected HDMI-Port?
    I have the same Problem with HD-Movies (playing in 2160p) in 23,976Hz as UltraHD-Movies. After disabling UltraHD Deep Color on my TV, the Problems with HD-Movies are gone. Playing UltraHD Movies my TV likes to switch on UltraHD Deep Color .
    Strange.....
     
  12. jo23

    jo23 Member

    I have enabled Deep Color on my TV. I have not tested HD Movies but i have black screens in other Android apps too when the 2160p/24Hz/YCrCb444/10bit is enabled.
     
  13. Winicjus

    Winicjus New Member

    I tested the Box now with a Samsung KS8090. The same problem. You can see, that the Box is being switched to 2160p and 23,976hz. Then you get time after time frame drops / black screen.
    I will test now earlier firmware versions as full image.
     
  14. fab0nymous

    fab0nymous New Member

    Can't get normal 2160p to work. X9S is directly linked to my Sony X85C. Thought i tested every combination of Color Space and Color Depth. But it is just stuttering.
    Playing over NFS, Resolution set to 2160p 60hz, Playback is set to sync to 23,976, HD Audio is Downgraded. It is stuttering

    General
    Unique ID : 179639739239138365299938102455961284663 (0x87255AF4F528A2799036687BB06A7037)
    Complete name : \\...\Serien\X\X\X.S01E01.DD51.DL.2160p.x264.mkv
    Format : Matroska
    Format version : Version 4 / Version 2
    File size : 15.0 GiB
    Duration : 57 min 11 s
    Overall bit rate : 37.7 Mb/s
    Encoded date : UTC 2015-11-01 02:21:58
    Writing application : mkvmerge v8.3.0 ('Over the Horizon') 64bit
    Writing library : libebml v1.3.1 + libmatroska v1.4.2

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L5.1
    Format settings, CABAC : Yes
    Format settings, ReFrames : 5 frames
    Codec ID : V_MPEG4/ISO/AVC
    Duration : 56 min 56 s
    Bit rate : 36.5 Mb/s
    Width : 3 840 pixels
    Height : 2 160 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 23.976 (24000/1001) FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.184
    Stream size : 14.5 GiB (97%)
    Writing library : x264 core 148 r2597 e86f3a1
    Encoding settings : cabac=1 / ref=5 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-3 / threads=24 / lookahead_threads=4 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=17.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=2:0.90
    Default : Yes
    Forced : No
    Color range : Limited
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709

    Audio #1
    ID : 2
    Format : AC-3
    Format/Info : Audio Coding 3
    Mode extension : CM (complete main)
    Format settings, Endianness : Big
    Codec ID : A_AC3
    Duration : 57 min 9 s
    Bit rate mode : Constant
    Bit rate : 640 kb/s
    Channel(s) : 6 channels
    Channel positions : Front: L C R, Side: L R, LFE
    Sampling rate : 48.0 kHz
    Frame rate : 31.250 FPS (1536 spf)
    Bit depth : 16 bits
    Compression mode : Lossy
    Stream size : 262 MiB (2%)
    Language : German
    Default : Yes
    Forced : No

    Audio #2
    ID : 3
    Format : AC-3
    Format/Info : Audio Coding 3
    Mode extension : CM (complete main)
    Format settings, Endianness : Big
    Codec ID : A_AC3
    Duration : 57 min 11 s
    Bit rate mode : Constant
    Bit rate : 640 kb/s
    Channel(s) : 6 channels
    Channel positions : Front: L C R, Side: L R, LFE
    Sampling rate : 48.0 kHz
    Frame rate : 31.250 FPS (1536 spf)
    Bit depth : 16 bits
    Compression mode : Lossy
    Stream size : 262 MiB (2%)
    Language : English
    Default : No
    Forced : No

    Please can anyone give me the right settings? Sync Playback is a must, please dont suggest to set the resolution to 24hz
     
  15. Winicjus

    Winicjus New Member

    I have tested now different firmwares
    1.2.7 -> same Problem
    1.2.6 ->same Problem
    1.2.3 -> If 10bit is enabled and I start to play a movie, hdmi signal is lost. I has to restart the box with unplugged HDMI cables, After the box is up and running plug the HDMI cable again and disables 10bit.

    @fab0nymous: There is no real setting for this problem. You can set to 1080p, set 8bit, disable HDR or ULTRAHD Deep color in you TV on the connected HDMI Port.
    If you play a movie local (USB-Stick, not over nfs), will you get the same problem? Perhaps it is only a network problem.
     
  16. fab0nymous

    fab0nymous New Member

  17. Winicjus

    Winicjus New Member

    Your test sample is to short. I get the problem after 1 -2 minutes frame and audio drop. Looks like complete HDMI Drop for 1 -2 sec. I suppose, there is a buffer problem. But I did not get any answer from Zidoo.
    I will send my box back and do not hope or gamble for a fix.
     
  18. fab0nymous

    fab0nymous New Member

    Last edited: Jan 25, 2017
  19. olisun

    olisun Member

    I have also noticed that not all files stutter but then they all played fine on my Nvidia Shield TV.
     
  20. jo23

    jo23 Member

    Zidoo team, please add a comment!
     

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