Transcoding FFmpeg error 218

[foobar1452]

Hi everyone!

I'm still a complete jellyfin beginner, but today I installed it on my Unraid 7.0 server (with a 12th generation Intel processor) in a docker environment. Together with {apps we don't talk about - TDP}.

All containers seem to work at first glance. I've already played a few mp4 movies on Jellyfin. However, it went wrong as soon as I wanted to play an mkv movie.

I then continued searching and tried to configure hardware transcoding properly.

I followed a few tutorials to install everything. I also configured (I think) HW transcoding properly (as in the tutorial). The GPU of my processor is accessible from docker. When I try to load a mkv movie I can see with the intel-gpu-top tool that a process is created. However, this process disappears from view within a second. In the logs it seems to be an error 218.

An example: 

Error processing request. URL "GET" "/videos/633356e9-c88a-1285-04e2-2d044006acb8/hls1/main/-1.mp4".
MediaBrowser.Common.FfmpegException: FFmpeg exited with code 218
  at MediaBrowser.MediaEncoding.Transcoding.TranscodeManager.StartFfMpeg(StreamState state, String outputPath, String commandLineArguments, Guid userId, TranscodingJobType transcodingJobType, CancellationTokenSource cancellationTokenSource, String

My knowledge is limited on this topic, so I hope you guys can help me out.. Thanks in advance! 

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I followed the following tutorial to install everything, including Jellyfin:

https://flemmingss.com/a-minimal-configu...ittorrent/

And specifically followed this github page for the hardware transcoding:

https://github.com/IlTossico/Jellyfin-un...ranscoding

My Jellyfin log can be found here:

https://1drv.ms/t/c/e2b1e3b1a13016db/ERy...g?e=tjeeoP

My settings for the docker container for Jellyfin are configured as follows:

https://1drv.ms/i/c/e2b1e3b1a13016db/ERb...g?e=6Pzynu

[TheDreadPirate]

You enabled AV1 encoding, which your iGPU does not support. It only supports AV1 DEcoding.

Uncheck "Allow encoding in AV1 format".

[foobar1452]

You enabled AV1 encoding, which your iGPU does not support.  It only supports AV1 DEcoding.

Uncheck "Allow encoding in AV1 format".

Thanks. You're a lifesaver!