In this video, I build a PVR from an Intel NUC and an HDHomeRun Extend. I use MythTV back end with a Kodi (formerly XBMC) front end. I also setup Mythweb for access to schedule recordings. For TV control, I setup a Pulse Eight USB to HDMI-CEC adapter.
SiliconDust HDTC-2US-M HDHomeRun EXTEND (Amazon Affiliate)
US: https://amzn.to/3dV87bx
UK: https://amzn.to/2NYARVG
CA: https://amzn.to/38G96uZ
AU: https://amzn.to/2ABKdUm