thanks , with libreelec there is error / not playing video or only audio.
experience is bit different for n2+
error for only audio
like
T:1036 error <general>> AddOnLog: Inputstream.adaptive: ConvertKidStrToBytes: Cannot convert KID "" as bytes due to wrong size
T:1036 warning <gneeral>: AddOnLog: inputstream.adaptive: Initialzing stream with unknown KID!
T:1036 error <general>> AddOnLog: Inputstream.adaptive: CDMMessage: 1 arrived!
afterwards
info <general> CDVDVideoCodecDRMPRIME::Open -using decoder V4L2 mem2mem HEVC decoder wrapper
T:1036 error <general>: ffmpeg [0x456a710]:[hevc_v4l2m2m] could not find a valid device
T:1036 error <general>: ffmpeg [0x456a710]:[hevc_v4l2m2m] cant configure decoder
T:1036 info <general>: CDVDVideoCodecDRMPRIME::Open - using decoder HEVC
audio plays, but no video.\
LibreELEC-AMLGX.aarch64-12.0.2-odroid-n2