Jellyfin keeps starting a process

[TheDreadPirate]

Looks like ffmpeg is generating trickplays and is continually failing. It looks like it is taking too long before the timeout counter ends and kills the process. So it never really finishes and keeps trying, maybe?

What are the specs of your system? And did you enable any of the acceleration options for generating trickplays? One setting that really speeds things up is "Only generate images from key frames".