Before 0.9.17.0, Plex was in a transition phase. This update was part of the "Public Preview" series that brought several back-end improvements designed to make the server more stable and faster at handling large libraries. 1. The Introduction of the New Transcoder
The centerpiece of this update was a major preview of the new universal transcoder plex media server version 09170 full
If you are clinging to version 09170 out of habit, consider what you are missing: Before 0