Seeking help understanding and optimizing transcoding on my TrueNAS server

[TheDreadPirate]

4 cores should be enough. 4GB should be enough memory, but 8GB is recommended if you have enough to spare. Large library scans can spawn a lot of ffmpeg processes that would benefit from the additional memory. Or you can limit the number of library scan threads and stay at 4GB of memory.

Dashboard > General. At the bottom there are two settings to specify how many threads Jellyfin uses during library scans. By default it will spawn 2x the number of threads available.