If you want to upload your Blu-ray collections to Plex server, you will need a Blu-ray DVD ripper to transcode it first. MakeMKV is a free tool that can remux Blu-ray discs for Plex streaming. It also supports Blu-ray discs with DRM protections. You can follow the steps above to rip Blu-ray for Plex streaming. However, an MKV output from a Blu-ray movie can take as much as 20-30GB in size. Meanwhile, MKV files are prone to A/V sync issues. You'd better transcode the MKV files to smaller MP4 using Handbrake.