Sudden transcoding issue with Radeon 680M

[will.rkr]

I installed Jellyfin in a privileged LXC container on proxmox. I passed through /dev/dri/card1 and /dev/dri/renderD128 and everything worked smoothly yesterday. I confirmed that HW transcoding (AMD AMF) was enabled and played a couple of 4K movies without issues.

This morning I noticed the container had halted. Oddly, even without rebooting the PC, /dev/dri/card1 was now card0. I updated the passthrough, powered it off and on. But now I can no longer play any videos with HW transcoding. Turning off HW transcoding enables me to play 480P movies but not 4K.

I also tried VAAPI but the same error. When I ran this command, it generated errors below. 

    /usr/lib/jellyfin-ffmpeg/ffmpeg -v verbose -init_hw_device vaapi=vadev/dri/renderD128 -init_hw_device opencl@va

    ----

    No matching devices found.
    Device creation failed: -19.
    Failed to set value 'opencl@va' for option 'init_hw_device': No such device
    Error parsing global options: No such device


I installed the latest AMD GPU drivers and followed this guide.

     1. https://amdgpu-install.readthedocs.io/en...lling.html
     2. https://jellyfin.org/docs/general/post-i...ration/amd

Happy to upload logs if those are useful. Here's a snippet from my one of my streams which seemed relevant.

         Stream mapping:
         Stream #0:0 (mpeg2video) -> setparams:default
         Stream #0:5 (dvdsub) -> scale:default
         overlay:default -> Stream #0:0 (av1_amf)
         Stream #0:1 -> #0:1 (ac3 (native) -> aac (libfdk_aac))
         Press [q] to stop, [?] for help
         [av1_amf @ 0x5e6de9d417c0] DLL libamfrt64.so.1 failed to open
         [vost#0:0/av1_amf @ 0x5e6de9d526c0] Error while opening encoder - maybe incorrect parameters such as bit_rate, rate, width or heigh
t.
         [fc#0 @ 0x5e6de9d3b080] Error sending frames to consumers: Unknown error occurred
        [fc#0 @ 0x5e6de9d3b080] Task finished with error code: -1313558101 (Unknown error occurred)
        [fc#0 @ 0x5e6de9d3b080] Terminating thread with return code -1313558101 (Unknown error occurred)
        [vost#0:0/av1_amf @ 0x5e6de9d526c0] Could not open encoder before EOF
        [vost#0:0/av1_amf @ 0x5e6de9d526c0] Task finished with error code: -22 (Invalid argument)
        [vost#0:0/av1_amf @ 0x5e6de9d526c0] Terminating thread with return code -22 (Invalid argument)
        [out#0/hls @ 0x5e6de9d4f4c0] Nothing was written into output file, because at least one of its streams received no packets.
        frame=    0 fps=0.0 q=0.0 Lsize=      0KiB time=N/A bitrate=N/A speed=N/A 

Thanks in advance for your assistance.