MakeMKV is a good choice if you want to back up DVDs in Plex media server with 100% original quality. It outputs MKV only so you can't adjust any DVD to Plex setting. It's also the top choice to rip Blu-ray movies to Plex. Meanwhile, a single MKV file of a DVD rip will be somewhere between 4 and 8GB depending on the content so make sure the Plex medis server is running on a device with large storage space.
Step 1. Insert DVD into DVD drive and download MakeMKV on Windows/Mac.
Step 2. Open MakeMKV and click the big optical drive button. MakeMKV will read the DVD and then display the DVD info.
Step 3. You can click on the disclosure triangle icon next to the disc to select the title and tracks you'd like to store in Plex.
Step 4. Click on the MakeMKV button to start.