After having many seek issues with Kodi and NextPVR I decided to try Emby and its TV feature. I'm using locast2tuner to provide a Locast m3u tuner to Emby. Watching Live TV or even a Recorded show I can't get CC displayed on either a Chromecast with Google TV, a Sony Bravia Android Tv, Roku Premiere+ or the Emby Theater app for Windows. A Samsung TV with Tizen DOES show captions on Live TV and Recorded TV. Also playing the .TS file with the default Movies and TV app from Windows 10 shows CC