[kluszon]

I met strange behavior while playing some videos. The sound starts normally, but without an image, which comes after a delay in one video it's 20 seconds in another 60 seconds and it's moved. What is the reason? Some buffering, somthing specific with the file format? What can I do with it? The problem occurred on the mkv file with codec H265 in 4K with 60 frames.

My platform: Rasberry CM 4
System: OpenELEC 11.0.3
Kodi: 20.2
Linux: 6.1.38

Interesting is that I met the same problem with those files in VLC on PC, but Celluloid played it without any problem.

File examples:

LG_Barcelona_UHD_4K_Demo-183970-tmu_hdr10_hevc.mk
LG_4K_OLED_Wonders-183957-tmu_hdr10_hevc.mkv
Samsung_Journey_Of_Color_4K_Demo-183962-tmu_hdr10_hevc.mkv
Samsung_UHD_Dubai-183963-tmu_hdr10_hevc.mkv
Sony_Fireworks_4K_Demo-183960-tmu_hdr10_hevc.mkv

[izprtxqkft]

not strange if it is using software decoding instead of hardware

provide a Debug Log showing the issue

[kluszon]

Kodi log

[izprtxqkft]

you didn't enable debug so the log is less than informative

no matter i was only trying to confirm it was using hardware decoding but it seems unlikely that it is

-----

see this link for config.txt changes - https://forums.raspberrypi.com/viewtopic.php?t=323303

see this link for an in depth discussion on hardware acceleration - https://forums.raspberrypi.com/viewtopic.php?t=312808

for most everything else the libreelec forum should be of some use since that's what you have installed - https://forum.libreelec.tv

best of luck

[popcornmix]

System: OpenELEC 11.0.3

Are you sure it's not LibreELEC?

4K60 hevc should play fine on a Pi4 (or CM4).
Make sure you add "hdmi_enable_4kp60=1" to config.txt and follow this.

[izprtxqkft]

Are you sure it's not LibreELEC?

the log shows it is LibreELEC, user is just confused on what they installed

[kluszon]

System: OpenELEC 11.0.3

Are you sure it's not LibreELEC?

4K60 hevc should play fine on a Pi4 (or CM4).
Make sure you add "hdmi_enable_4kp60=1" to config.txt and follow this.

It's my mistake, I have LibreELECT. I have also enabled 4k60 in the config file. Some 4k movies with H265 work fine, but some like those that I linked in the post start with delay and the audio is moved. After this strange time, the image of the video plays smoothly. 
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Now I have new advanced log file