Don't know what you are really looking for. Transcoding is done on the Plex Server. Are you saying you want your Mac Mini be Plex Server or want your NAS be a Plex Server?
Tanscoding should be avoided at all costs as it degrades PQ.
A 4K disc rip has bitrate of 50mbps to 80mbps (some reach over 100mbps) typically. So, it is up to the network speed (gigabit or else) and NAS speed (disk throughput and NAS throughput) to limit how many 4K streams you can send out. If you need transcoding of a 4K stream on the Plex Server, you will probably only going to get 1 stream at anytime on most software based transcoding.
Tanscoding should be avoided at all costs as it degrades PQ.
A 4K disc rip has bitrate of 50mbps to 80mbps (some reach over 100mbps) typically. So, it is up to the network speed (gigabit or else) and NAS speed (disk throughput and NAS throughput) to limit how many 4K streams you can send out. If you need transcoding of a 4K stream on the Plex Server, you will probably only going to get 1 stream at anytime on most software based transcoding.
