garypower

I have been having the same issue with a P400 for a long time. Just like you it works fine in Tdarr / emby but fails in plex with errors like yours. Clearing the cache "fixes" the issue, but I use the windows client regularly and it breaks again for everything within a few plays! Please post if you find anything!

Just going to put this here with what I have tried so far : Unraid 6.9.0 beta-35 - Plex docker version 1.20.4.3517 - Nvidia Driver 4.55.38 (card Quadro P400) As soon as hardware transcoding starts it bombs with : An unknown error occurred (4294967283) Error code: 4294967283 Also built a VM and passed through card, installed Nvidia drivers 455.38 and get the same error! Installed Jellyfin Docker to test : HW transcoding works with no issues. Rolled back to Unraid 6.8.3 and installed the prebuilt kernel with Nvidia drivers version 450.66 from : Plex docker now transcodes with no issues at all! I have been back and forth and no idea what is going on but it is 100% replicable. Guess I am staying on this version for a while.

I did not change anything from what the docker pulled so in this case it is : / Version 1.20.4.3517

Yes definitely rebooted after driver install, and h/w encoding works fine in the Jellyfin docker. Just in the plex one it fails with the error above.

Hi, I am having an issue getting Nvidia enc / dec working with the latest Beta. I am running 6.9.0 beta-35 and the linuxserver.io plex docker. Nvidia driver package is loaded and showing version 455.38 (card is a Quadro P400) When turning on hardware transcode it bombs with : An unknown error occurred (4294967283) Error code: 4294967283 If you click retry sometimes it encodes 5 seconds or so of video and then drops right out! Doing a "watch nvidia-smi" shows plex firing up the process then it going away! I have also tried firing up a Jellyfin Docker and hw Transcode is working fine in that! Any ideas are appreciated!