Anyone have any interesting rffmpeg setups?

[TheDreadPirate]

I suggest you just run jellyfin on N150. rffmpeg will going to work worse and worse when jellyfin's transcoding pipeline integrates with the system more and more tightly. It will generate different command on different OS and kernel version but with rffmpeg it will very likely generate a wrong one (because the kernel running jellyfin is not the kernel running ffmpeg)

100% this.  It is much simpler to have your NAS just be a NAS to store all your media than it is to have the N150 device be a remote transcoder.