In LibreELEC running on a Raspberry Pi 4, playing any 10-bit HEVC videos that are 4:3 aspect ratio cause a white line to be shown immediately to the right of the video.
This only happens on 4:3 10-bit HEVC videos. Any AVC or 8-bit HEVC videos are unaffected.
Software:
-LibreELEC 9.1.002 (LibreELEC-RPi4.arm-9.1.002.img)
Hardware:
-Raspberry Pi 4 (4GB RAM)
-Sony AV Receiver (STR-DN1080)
-LG 55" TV (55UB820V)
-Also, in the unlikely case it matters, a Flirc USB v2 is connected to the Pi for control
This problem does not happen with SPMC v16.7.4 or Kodi v18.3 running on my Android TV box (with all the other hardware being the same as the Pi setup), which seems to point to a LibreELEC or Pi problem. Turning hardware acceleration off in the Kodi settings makes no difference.
Here is a log for the problem:
I play a few seconds of two videos during the course of this log, both consecutive episodes from the same series:
S7E19 - Q2.mkv - this does NOT have a white line (video is 8-bit HEVC)
S7E20 - Author, Author.mkv - this DOES have a white line (video is 10-bit HEVC)
Thanks for reading this and I hope I've given enough info to help look into it, but I'm happy to provide more if required.