Flickering at bottom of screen

Hi all,

CE 9.0.1 - S912 TX92

When playing the video below I get the normal black strips at the top and bottom of the screen, however the bottom one is continually flickering from black to white to greys.
The top one remains a constant black.

Any ideas appreciated.

TIA

Greg

> General
> Unique ID                                : 18366671169436067048902544370765179739 (0xDD14ACD838E28BA0387D520881CAB5B)
> Complete name                            : M:\Movie.2160p.BluRay.x265.10bit.HDR.DTS-HD.MA.TrueHD.7.1.Atmos-SWTYBLZ.mkv
> Format                                   : Matroska
> Format version                           : Version 4
> File size                                : 4.73 GiB
> Duration                                 : 21 min 55 s
> Overall bit rate mode                    : Variable
> Overall bit rate                         : 30.9 Mb/s
> Movie name                               : Movie.2160p.BluRay.x265.10bit.HDR.DTS-HD.MA.TrueHD.7.1.Atmos-SWTYBLZ
> Encoded date                             : UTC 2019-02-07 19:46:15
> Writing application                      : mkvmerge v30.1.0 ('Forever And More') 64-bit
> Writing library                          : libebml v1.3.6 + libmatroska v1.4.9
> Cover                                    : Yes
> Attachments                              : small_cover.jpg / small_cover_land.jpg / cover.jpg / cover_land.jpg
> 
> Video
> ID                                       : 1
> Format                                   : HEVC
> Format/Info                              : High Efficiency Video Coding
> Commercial name                          : HDR10
> Format profile                           : Main 10@L5.1@High
> Codec ID                                 : V_MPEGH/ISO/HEVC
> Duration                                 : 21 min 54 s
> Bit rate                                 : 16.6 Mb/s
> Width                                    : 3 840 pixels
> Height                                   : 1 606 pixels
> Display aspect ratio                     : 2.40:1
> Frame rate mode                          : Constant
> Frame rate                               : 23.976 (24000/1001) FPS
> Color space                              : YUV
> Chroma subsampling                       : 4:2:0 (Type 2)
> Bit depth                                : 10 bits
> Bits/(Pixel*Frame)                       : 0.112
> Stream size                              : 2.54 GiB (54%)
> Title                                    : Movie.2160p.BluRay.x265.10bit.HDR.DTS-HD.MA.TrueHD.7.1.Atmos-SWTYBLZ
> Writing library                          : x265 3.0_RC+13-ae085e5cd8a2:[Windows][GCC 8.2.1][64 bit] 10bit
> Encoding settings                        : cpuid=1111039 / frame-threads=16 / numa-pools=24,24,24,24 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x1606 / interlace=0 / total-frames=0 / level-idc=51 / high-tier=1 / uhd-bd=0 / ref=3 / no-allow-non-conformance / repeat-headers / annexb / aud / hrd / info / hash=0 / no-temporal-layers / no-open-gop / min-keyint=1 / keyint=24 / gop-lookahead=0 / bframes=4 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=25 / lookahead-slices=4 / scenecut=40 / radl=0 / no-splice / no-intra-refresh / ctu=64 / min-cu-size=8 / no-rect / no-amp / max-tu-size=32 / tu-inter-depth=1 / tu-intra-depth=1 / limit-tu=0 / rdoq-level=0 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / strong-intra-smoothing / max-merge=2 / limit-refs=3 / no-limit-modes / me=1 / subme=2 / merange=57 / temporal-mvp / weightp / no-weightb / no-analyze-src-pics / deblock=0:0 / no-sao / no-sao-non-deblock / rd=3 / no-early-skip / rskip / no-fast-intra / no-tskip-fast / no-cu-lossless / no-b-intra / no-splitrd-skip / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=0.00 / no-rd-refine / no-lossless / cbqpoffs=0 / crqpoffs=0 / rc=crf / crf=16.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=0 / vbv-maxrate=160000 / vbv-bufsize=160000 / vbv-init=0.9 / crf-max=0.0 / crf-min=0.0 / ipratio=1.40 / pbratio=1.30 / aq-mode=1 / aq-strength=1.00 / cutree / zone-count=0 / no-strict-cbr / qg-size=32 / no-rc-grain / qpmax=69 / qpmin=0 / no-const-vbv / sar=1 / overscan=0 / videoformat=5 / range=0 / colorprim=9 / transfer=16 / colormatrix=9 / chromaloc=1 / chromaloc-top=2 / chromaloc-bottom=2 / display-window=0 / master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,50) / max-cll=0,0 / min-luma=0 / max-luma=1023 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / opt-qp-pps / opt-ref-list-length-pps / no-multi-pass-opt-rps / scenecut-bias=0.05 / no-opt-cu-delta-qp / no-aq-motion / hdr / hdr-opt / no-dhdr10-opt / no-idr-recovery-sei / analysis-reuse-level=5 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=0 / refine-ctu-distortion=0 / no-limit-sao / ctu-info=0 / no-lowpass-dct / refine-analysis-type=0 / copy-pic=1 / max-ausize-factor=1.0 / no-dynamic-refine / no-single-sei / no-hevc-aq / qp-adaptation-range=1.00
> Default                                  : Yes
> Forced                                   : No
> 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: 1000 cd/m2
> 
> Audio #1
> ID                                       : 2
> Format                                   : MLP FBA 16-ch
> Format/Info                              : Meridian Lossless Packing FBA with 16-channel presentation
> Commercial name                          : Dolby TrueHD with Dolby Atmos
> Codec ID                                 : A_TRUEHD
> Duration                                 : 21 min 54 s
> Bit rate mode                            : Variable
> Bit rate                                 : 7 218 kb/s
> Maximum bit rate                         : 8 331 kb/s
> Channel(s)                               : 8 channels
> Channel layout                           : L R C LFE Ls Rs Lb Rb
> Sampling rate                            : 48.0 kHz
> Frame rate                               : 1 200.000 FPS (40 SPF)
> Compression mode                         : Lossless
> Stream size                              : 1.10 GiB (23%)
> Title                                    : Dolby TrueHD with Dolby Atmos
> Language                                 : English
> Default                                  : Yes
> Forced                                   : No
> Number of dynamic objects                : 13
> Bed channel count                        : 1 channel
> Bed channel configuration                : LFE
> 
> Audio #2
> ID                                       : 3
> Format                                   : DTS XLL
> Format/Info                              : Digital Theater Systems
> Commercial name                          : DTS-HD Master Audio
> Codec ID                                 : A_DTS
> Duration                                 : 21 min 55 s
> Bit rate mode                            : Variable
> Bit rate                                 : 6 350 kb/s
> Channel(s)                               : 8 channels
> Channel layout                           : C L R LFE Lb Rb Lss Rss
> Sampling rate                            : 48.0 kHz
> Frame rate                               : 93.750 FPS (512 SPF)
> Bit depth                                : 24 bits
> Compression mode                         : Lossless
> Stream size                              : 996 MiB (21%)
> Title                                    : DTS-HD Master Audio
> Language                                 : English
> Default                                  : No
> Forced                                   : No
> 
> Audio #3
> ID                                       : 4
> Format                                   : AC-3
> Format/Info                              : Audio Coding 3
> Commercial name                          : Dolby Digital
> Codec ID                                 : A_AC3
> Duration                                 : 21 min 54 s
> Bit rate mode                            : Constant
> Bit rate                                 : 640 kb/s
> Channel(s)                               : 6 channels
> Channel layout                           : L R C LFE Ls Rs
> Sampling rate                            : 48.0 kHz
> Frame rate                               : 31.250 FPS (1536 SPF)
> Bit depth                                : 16 bits
> Compression mode                         : Lossy
> Stream size                              : 100 MiB (2%)
> Title                                    : Dolby Digital AC-3
> Language                                 : English
> Service kind                             : Complete Main
> Default                                  : No
> Forced                                   : No
> 
> Text #1
> ID                                       : 5
> Format                                   : UTF-8
> Codec ID                                 : S_TEXT/UTF8
> Codec ID/Info                            : UTF-8 Plain Text
> Duration                                 : 20 min 13 s
> Bit rate                                 : 36 b/s
> Count of elements                        : 219
> Stream size                              : 5.48 KiB (0%)
> Title                                    : English-SRT
> Language                                 : English
> Default                                  : Yes
> Forced                                   : No
> 
> Text #2
> ID                                       : 6
> Format                                   : UTF-8
> Codec ID                                 : S_TEXT/UTF8
> Codec ID/Info                            : UTF-8 Plain Text
> Duration                                 : 21 min 2 s
> Bit rate                                 : 41 b/s
> Count of elements                        : 247
> Stream size                              : 6.34 KiB (0%)
> Title                                    : English-SDH-SRT
> Language                                 : English
> Default                                  : No
> Forced                                   : No
> 
> Text #3
> ID                                       : 7
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 21 min 41 s
> Bit rate                                 : 29.0 kb/s
> Count of elements                        : 496
> Stream size                              : 4.51 MiB (0%)
> Title                                    : English-PGS
> Language                                 : English
> Default                                  : No
> Forced                                   : No
> 
> Text #4
> ID                                       : 8
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 14 min 7 s
> Bit rate                                 : 3 418 b/s
> Count of elements                        : 44
> Stream size                              : 354 KiB (0%)
> Title                                    : Spanish-PGS
> Language                                 : Spanish
> Default                                  : No
> Forced                                   : No
> 
> Text #5
> ID                                       : 9
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 20 min 50 s
> Bit rate                                 : 8 199 b/s
> Count of elements                        : 150
> Stream size                              : 1.22 MiB (0%)
> Title                                    : French-PGS
> Language                                 : French
> Default                                  : No
> Forced                                   : No
> 
> Text #6
> ID                                       : 10
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 2 555 b/s
> Count of elements                        : 46
> Stream size                              : 322 KiB (0%)
> Title                                    : Spanish-PGS
> Language                                 : Spanish
> Default                                  : No
> Forced                                   : No
> 
> Text #7
> ID                                       : 11
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 2 610 b/s
> Count of elements                        : 44
> Stream size                              : 329 KiB (0%)
> Title                                    : Danish-PGS
> Language                                 : Danish
> Default                                  : No
> Forced                                   : No
> 
> Text #8
> ID                                       : 12
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 1 992 b/s
> Count of elements                        : 36
> Stream size                              : 251 KiB (0%)
> Title                                    : Dutch-PGS
> Language                                 : Dutch
> Default                                  : No
> Forced                                   : No
> 
> Text #9
> ID                                       : 13
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 2 969 b/s
> Count of elements                        : 48
> Stream size                              : 374 KiB (0%)
> Title                                    : Finnish-PGS
> Language                                 : Finnish
> Default                                  : No
> Forced                                   : No
> 
> Text #10
> ID                                       : 14
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 18 min 16 s
> Bit rate                                 : 8 689 b/s
> Count of elements                        : 138
> Stream size                              : 1.14 MiB (0%)
> Title                                    : German-PGS
> Language                                 : German
> Default                                  : No
> Forced                                   : No
> 
> Text #11
> ID                                       : 15
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 2 821 b/s
> Count of elements                        : 50
> Stream size                              : 356 KiB (0%)
> Title                                    : Italian-PGS
> Language                                 : Italian
> Default                                  : No
> Forced                                   : No
> 
> Text #12
> ID                                       : 16
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 20 min 53 s
> Bit rate                                 : 12.5 kb/s
> Count of elements                        : 224
> Stream size                              : 1.87 MiB (0%)
> Title                                    : Japanese-PGS
> Language                                 : Japanese
> Default                                  : No
> Forced                                   : No
> 
> Text #13
> ID                                       : 17
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 2 952 b/s
> Count of elements                        : 48
> Stream size                              : 372 KiB (0%)
> Title                                    : Norwegian-PGS
> Language                                 : Norwegian
> Default                                  : No
> Forced                                   : No
> 
> Text #14
> ID                                       : 18
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 2 349 b/s
> Count of elements                        : 40
> Stream size                              : 296 KiB (0%)
> Title                                    : Swedish-PGS
> Language                                 : Swedish
> Default                                  : No
> Forced                                   : No
> 
> Text #15
> ID                                       : 19
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 20 min 53 s
> Bit rate                                 : 21.1 kb/s
> Count of elements                        : 354
> Stream size                              : 3.15 MiB (0%)
> Title                                    : Chinese-PGS
> Language                                 : Chinese
> Default                                  : No
> Forced                                   : No
> 
> Text #16
> ID                                       : 20
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 2 543 b/s
> Count of elements                        : 48
> Stream size                              : 321 KiB (0%)
> Title                                    : Czech-PGS
> Language                                 : Czech
> Default                                  : No
> Forced                                   : No
> 
> Text #17
> ID                                       : 21
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 20 min 53 s
> Bit rate                                 : 16.6 kb/s
> Count of elements                        : 438
> Stream size                              : 2.48 MiB (0%)
> Title                                    : Korean-PGS
> Language                                 : Korean
> Default                                  : No
> Forced                                   : No
> 
> Text #18
> ID                                       : 22
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 20 min 53 s
> Bit rate                                 : 18.3 kb/s
> Count of elements                        : 438
> Stream size                              : 2.74 MiB (0%)
> Title                                    : Chinese-PGS
> Language                                 : Chinese
> Default                                  : No
> Forced                                   : No
> 
> Text #19
> ID                                       : 23
> Format                                   : PGS
> Muxing mode                              : zlib
> Codec ID                                 : S_HDMV/PGS
> Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
> Duration                                 : 17 min 12 s
> Bit rate                                 : 1 937 b/s
> Count of elements                        : 34
> Stream size                              : 244 KiB (0%)
> Title                                    : Polish-PGS
> Language                                 : Polish
> Default                                  : No
> Forced                                   : No

Its because the height is not divisible by 8/16.

I doubt that’s the case.
I’ve had seen similar problems with remuxes (which are the full 3840x2160 resolution), and it happened on both CE and my TVs built in media player. My guess is that it’s a bug in the way the TV handles this sort of HDR scenes.

I see this for live TV as well. My S905 doesn’t even support HDR.

Personally, I’m thinking this is a coreelec/analogic related bug. However, not too annoying.

Can you upload a sample?

Is a simple movie taken with my mobile phone enough?

no, a part of real file with this issue

For me it happens for live TV. How to offer a real file? Recording it via tvh?

Here ya go…

Played back fine on my A95X (S905X) to a panasonic TX50EX700 colour maybe slightly washed but no artefacts at the bottom of the screen. Have you tried a different HDMI Cable.

My computer has a huge archiving job on at the mo I will try re-coding it and upload a link later for you to try.

Tried your sample and it plays properly on my (i5) PC and on my X92_S912 box connected to my LG TV. No artefacts or anything unusual on the bottom lines…

Then I wonder why I have an issue? Strange!

Is there anything I can do to track down the problem?

Please attach a screenshot how does it look…
I don’t know where is an issue…
But check that

  1. you don’t use any TV optimizations
  2. don’t use some calibration for this resolution
  3. don’t use some zoom in settings
    Don’t know if something of above can cause an issue, but you can check.

Also you can execute command dispinfo while watching this video and give us a link to check display info and your settings

OK, will try to get something later today.

Don’t have any of the items 1-3 in your list.

Do you want dispinfo or dispinfo2?

I have only dispinfo by default.

OK I will use dispinfo, just that I downloaded dispinfo2.sh for some other issue a while back.

Strange all the screenshots look like this.

Here is dispinfo with the video playing.

Screen Shots don’t work for UHD/HDR…

Did you try a different HDMI cable ? Try forcing 8 bit mode just as a test to see if a lower bitrate works

Yep, tried another cable and the same deal. How do I force 8 bit mode?