There is a movie player that would highlight the character/actor on screen at the moment you hit pause. There is a link to find out more that would take you to the appropriate web page with the info.
I want to say it was google play, but not completely sure.
Amazon Prime Video show you information on the actors in the current scene. If you are (e.g.) chromecasting from a phone you have it continually on the mobile display while the film is on the TV.
I want to say it was google play, but not completely sure.