I have a few “Now Playing” type displays that I turn on and off when specific zones transition into and out of “play” states. I finally decided to wrap this functionality into a blueprint, and I’ve now shared it on the Blueprint Exchange.
The user specifies a media device to watch and then provides custom actions for what should happen when the device starts or stops playing. Optionally, you can specify an timer length between when playback stops and when the “off” automation runs. By default, it’s a minute.
The blueprint handles the obvious case where you start playing again before the idle timeout occurs. It also handles cases where the media player transitions between non-playing states and where Home Assistant starts up when the device is already playing.
I know others here have put similar functionality together but I figured it was worth the time to make a robust, re-usable version. Hope someone finds this useful: