Would it be possible to use DVR with CenturyLink prism?

General Discussions Plex Features
1

it’s iptv

2

Likely No. Plex Live TV and DVR require access to a over-the-air reception tuner, or a tuner with cable card.
Reference https://support.plex.tv/hc/en-us/articles/225877427-Supported-DVR-Devices-and-Antennas