Tested with “HDR Tone Mapping” option checked → No matching device found → reverts to SW transcode
Tested without the “HDR Tone Mapping” option checked, it does HW transcode but no tone mapping (expected)
1080p h264 → works
1080p HEVC → works
Someone pointed the issue in the Plex Beta forum
Maybe it’s just that dockerfile doesn’t pull the right version of something for these new betas or that something got updated upstream
