moondy

Hey all, Just wanted to share a fix for a bug that was driving me crazy, in case anyone else is running into it. Any remote 4K HDR stream (like on a Fire Stick) would fail to play, giving a generic error. My 1080p files were fine (and I didn't have any dramas as I run an NVIDIA shield). Logs showed the transcode speed was speed=0.6 (or similar), meaning it was falling back to CPU and choking. Hardware: Unraid server, Nvidia GTX 1080 Ti (Pascal), binhex/arch-plex container. The problem I think is the HDR Tone Mapping feature. The latest Plex version (1.42.2.10156-1-01) seems to have a bug where tone mapping on Pascal cards fails. This causes the entire hardware transcode to crash and fall back to the CPU, which can't handle a 4K transcode. (Disabling tone mapping "worked" but gave washed-out, gray video, which isn't a real fix.) The solution (workaround) was to roll back the container to the previous version. I rolled back from: ghcr.io/binhex/arch-plex:1.42.2.10156-1-01 To this stable version: ghcr.io/binhex/arch-plex:1.42.1.10060-1-01 After rolling back and re-enabling HDR Tone Mapping, all my 4K HDR transcodes are working perfectly with full hardware acceleration. If you're having 4K transcodes fail on a 10-series card, check your Plex version! Hope this saves someone else the headache