popcornmix Just did, all the variations just to make sure.
10.0.2 -> plays
10.0.2 with hdmi_enable_4kp60=1 -> fails
test build -> plays
test build with hdmi_enable_4kp60=1 -> PLAYS
Very cool, seems that fixed it. Thank you very much, looking forward to a release with the fix included. 
The hell.. you're a genius.
Just did, now the file plays fine in 10.0.2
Strangely enough when hdmi_enable_4kp60=1 is enabled it never plays, no matter what resolution or framerate i set for the GUI or if framerate change on start/stop is enabled or disabled or whitelist is enabled or not.
Also, the file is 23.976fps, so that shouldn't matter as well..
Would you say this is some kind of Kodi or LE bug or a RPi4 issue? Or a combination?
That file plays totally fine for me on a Pi4 4GB (Tested 10.0.1, 10.0.2 and LibreELEC-RPi4.arm-11.0-nightly-20220317-859d6eb). Display is a Philips 55OLED936.
What happens when you guys try to play my sample file? See: LE 10.0.2 on RPi4 not playing files that 10.0.1 had no problems with.
Just received some "Ultra High Speed" aka HDMI 2.1 cables and adapters. (Micro-to-Fullsize, Fullsize-to-Fullsize with Adapter)
Same issue: Files work fine in LE 10.0.1, don't play at all in 10.0.2 and 11 Nightly.
Oh and, is there some kind of bugtracker where this issue might be listed? Just so i could track the issue myself without nagging people about it.
Thanks.
Oh and just fyi, i just tried the latest LE 11 nightly, same problem.
I might try that, but i highly doubt that that's the issue.. since other 10bit HDR files play fine.
This one, for example, is playing perfectly:
General
Unique ID : x
Complete name : 123.mkv
Format : Matroska
Format version : Version 4
File size : 11.5 GiB
Duration : 1 h 0 min
Overall bit rate : 27.1 Mb/s
Encoded date : UTC 2018-09-06 23:03:00 / UTC 2018-07-04 13:47:44
Writing application : mkvmerge v25.0.0 ('Prog Noir') 64-bit
Writing library : libebml v1.3.6 + libmatroska v1.4.9 / Lavf58.0.0
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5@Main
HDR format : SMPTE ST 2086, HDR10 compatible
Codec ID : V_MPEGH/ISO/HEVC
Duration : 1 h 0 min
Bit rate : 25.9 Mb/s
Width : 3 840 pixels
Height : 1 920 pixels
Display aspect ratio : 2.000
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.147
Stream size : 11.0 GiB (96%)
Writing library : x265 2.8+66-88ee12651e30:[Windows][MSVC 1915][64 bit] 10bit
Encoding settings : cpuid=1111039 / frame-threads=4 / numa-pools=0,28 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x1920 / interlace=0 / total-frames=0 / level-idc=0 / high-tier=1 / uhd-bd=0 / ref=5 / no-allow-non-conformance / repeat-headers / annexb / no-aud / no-hrd / info / hash=0 / no-temporal-layers / open-gop / min-keyint=23 / keyint=250 / gop-lookahead=0 / bframes=8 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=40 / lookahead-slices=0 / scenecut=40 / radl=0 / no-intra-refresh / ctu=64 / min-cu-size=8 / no-rect / no-amp / max-tu-size=32 / tu-inter-depth=3 / tu-intra-depth=3 / limit-tu=4 / rdoq-level=2 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / strong-intra-smoothing / max-merge=4 / limit-refs=1 / limit-modes / me=3 / subme=4 / merange=57 / temporal-mvp / weightp / weightb / no-analyze-src-pics / deblock=0:0 / sao / no-sao-non-deblock / rd=6 / no-early-skip / rskip / no-fast-intra / no-tskip-fast / no-cu-lossless / b-intra / no-splitrd-skip / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=1.00 / no-rd-refine / no-lossless / cbqpoffs=0 / crqpoffs=0 / rc=crf / crf=12.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=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=0 / overscan=0 / videoformat=5 / range=0 / colorprim=9 / transfer=16 / colormatrix=9 / chromaloc=0 / display-window=0 / master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(40000000,50) / max-cll=2945,279 / min-luma=0 / max-luma=1023 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / no-opt-qp-pps / no-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 / limit-sao / ctu-info=0 / no-lowpass-dct / refine-mv-type=0 / copy-pic=1 / max-ausize-factor=1.0 / no-dynamic-refine / no-single-sei
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primar : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 2945 cd/m2
Maximum Frame-Average Light Le : 279 cd/m2
Hardware: Raspberry Pi4B, 4GB RAM
LE/Kodi Version: 10.0.2/19.4 and 10.0.1/19.3 (both my existing installation and completely fresh installs)
I've found that some files do not start playing on 10.0.2 that worked flawlessly on 10.0.1. It looks like the HDMI Signal completely blanks out.
Funnily enough, as i found out by accident: When i start playing a file that works and then, while still playing, i select and start the problematic file it works as well.
You can find one of the problematic files (or, well, a 10 second sample i cut from it without re-rendering that shows the same behaviour) here:
https://www.dropbox.com/s/g4kwjf1g33i8wyl/test_LE10.0.2_rpi4.mkv?dl=1
General
Unique ID : x
Complete name : test_LE10.0.2_rpi4.mkv
Format : Matroska
Format version : Version 4
File size : 24.9 MiB
Duration : 13 s 513 ms
Overall bit rate : 15.4 Mb/s
Encoded date : UTC 2020-03-29 17:08:40
Writing application : Lavf58.45.100
Writing library : Lavf58.45.100
ErrorDetectionType : Per level 1
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main [email protected]@High
Codec ID : V_MPEGH/ISO/HEVC
Duration : 10 s 802 ms
Bit rate : 22.3 Mb/s
Width : 3 840 pixels
Height : 1 744 pixels
Display aspect ratio : 2.2:1
Frame rate mode : Variable
Frame rate : 7 910.942 FPS
Original frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.000
Stream size : 9.25 GiB
Writing library : x265 3.2+38-fdbd4e4a2aff:[Windows][GCC 9.2.1][64 bit] 10bit
Encoding
settings : cpuid=1111039 / frame-threads=4 / numa-pools=16
/ wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 /
input-csp=1 / input-res=3840x1744 / interlace=0 / total-frames=85454 /
level-idc=51 / high-tier=1 / uhd-bd=0 / ref=5 / no-allow-non-conformance
/ repeat-headers / annexb / aud / hrd / info / hash=0 /
no-temporal-layers / open-gop / min-keyint=23 / keyint=250 /
gop-lookahead=0 / bframes=8 / b-adapt=2 / b-pyramid / bframe-bias=0 /
rc-lookahead=40 / lookahead-slices=8 / scenecut=40 / hist-scenecut=0 /
radl=0 / no-splice / no-intra-refresh / ctu=64 / min-cu-size=8 / no-rect
/ no-amp / max-tu-size=32 / tu-inter-depth=4 / tu-intra-depth=4 /
limit-tu=4 / 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=4 / limit-refs=1 / no-limit-modes /
me=1 / subme=5 / merange=57 / temporal-mvp / no-frame-dup / no-hme /
weightp / weightb / no-analyze-src-pics / deblock=-3:-3 / no-sao /
no-sao-non-deblock / rd=4 / selective-sao=0 / early-skip / rskip /
no-fast-intra / no-tskip-fast / no-cu-lossless / 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=19.0
/ 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=1.30 / pbratio=1.20 / aq-mode=1 / aq-strength=0.85
/ no-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=1 / transfer=1 / colormatrix=1 / chromaloc=0 /
display-window=0 / cll=0,0 / min-luma=0 / max-luma=1023 /
log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 /
no-opt-qp-pps / no-opt-ref-list-length-pps / no-multi-pass-opt-rps /
scenecut-bias=0.05 / hist-threshold=0.01 / no-opt-cu-delta-qp /
no-aq-motion / no-hdr10 / no-hdr10-opt / no-dhdr10-opt /
no-idr-recovery-sei / analysis-reuse-level=0 /
analysis-save-reuse-level=0 / analysis-load-reuse-level=0 /
scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=1 /
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 / no-svt / no-field /
qp-adaptation-range=1.00 /
no-scenecut-aware-qpconformance-window-offsets / right=0 / bottom=0
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
