Docker container transcoding crash

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You have a lot of errors in there from improperly named subtitles that might be confusing ffprobe. Rename them to be the filename minus extension .srt or .en.srt with the two-digit language code. There's even one in there that uses the three-digit language code that passes muster. Dual extensions seem to be problematic.

Transcodes 1 and 3 look normal -- no early exit and the timing seems about right. Transcode 2 gets a q command from Jellyfin, meaning something may have gone wrong there. I see two fatal events related to HTTP client timeout and possibly websockets.

Code:

System.Threading.Tasks.TaskCanceledException: The request was canceled due to the configured HttpClient.Timeout of 5 seconds elapsing.
---> System.TimeoutException: The operation was canceled.
---> System.Threading.Tasks.TaskCanceledException: The operation was canceled.
---> System.IO.IOException: Unable to read data from the transport connection: Operation canceled.
---> System.Net.Sockets.SocketException (125): Operation canceled
   --- End of inner exception stack trace ---
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource<System.Int32>.GetResult(Int16 token)
   at System.Net.Http.HttpConnection.<EnsureReadAheadTaskHasStarted>g__ReadAheadWithZeroByteReadAsync|40_0()
   at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---

How are you running your server? Is this via remote access or on the local network? Reverse proxy? Hard-wired?

I also took a look into the known issues on Linux and you'll want to check your kernel to see if it falls within the "incomplete support" category. This all depends on what you're running (e.g., Debian, Ubuntu) but details are in the list.

https://jellyfin.org/docs/general/post-i...l-on-linux