Add ISO image files Run the ISO to Plex Converter program and click DVD disc button to add the ISO files. How to convert DVD ISO to Plex compatible video files 1. Now download this tool and follow the instructions to convert ISO image files via Plex to Media Players. If you are using a Mac, you can go to Mac DVD ripper for Plex.There are more features we could dig into here: access to your Plex logs, for example, and a few tools for managing playlists. We’ve shown you how to automatically download subtitles in Plex, but WebTools lets you look at which files in your collection currently have subtitles, and even upload subtitles to your server. Another tool work checking out: the subtitle browser.