SOLVED: 10.9.3 / Playback Error

[dha]

Hey, on Ubuntu, with an Ubuntu install, just upgraded to 10.9.3 (from 10.8.10), but I cannot play videos anymore (music works fine).
I got a "Playback failed due to a fatal player error" message.
The logs look like this:

[2024-05-18 07:15:04.305 +00:00] [INF] PlaybackTracker : Adding Start Event : 05/18/2024 07:15:04
[2024-05-18 07:15:04.305 +00:00] [INF] Creating StartPlaybackTimer Task
[2024-05-18 07:15:04.305 +00:00] [INF] StartPlaybackTimer : Entered
[2024-05-18 07:15:04.335 +00:00] [INF] User policy for "admin". EnablePlaybackRemuxing: True EnableVideoPlaybackTranscoding: True EnableAudioPlaybackTranscoding: True
[2024-05-18 07:15:04.879 +00:00] [INF] Current HLS implementation doesn't support non-keyframe breaks but one is requested, ignoring that request
[2024-05-18 07:15:04.880 +00:00] [ERR] Error processing request. URL "GET" "/videos/bae4ca39-c3e6-67ea-340a-cf68da1342e0/hls1/main/-1.mp4".
System.ArgumentNullException: Value cannot be null. (Parameter '_mediaEncoder.EncoderPath')
  at System.ArgumentNullException.Throw(String paramName)
  at System.ArgumentNullException.ThrowIfNull(Object argument, String paramName)
  at System.ArgumentException.ThrowNullOrEmptyException(String argument, String paramName)
  at System.ArgumentException.ThrowIfNullOrEmpty(String argument, String paramName

Any ideas of what the problem may be?
Thanks

[gnattu]

Very likely that jellyfin-ffmpeg is lost on your system. Can you try install jellyfin-ffmpeg6 then restart jellyfin?

[dha]

Works perfectly now, thanks.

[endoscopic]

I am having this same problem on Windows 10 with Jellyfin version 10.9.2. Where would I install jellyfin-ffmpeg to in order to fix this?

Edit: I figured out the issue. The Jellyfin server folder just needs to be added to your system path.