You can now have Emby (FKA Media Browser) on your Nexus Player with the new Emby app for Android TV. The new Emby for Android TV app has a material design 10 foot user interface that will look great on a TV. You can play your movie and TV collection via the app streaming from your Emby Server (or the cloud), it has parental controls, sharing and rich metadata.
If you have an Android TV you should have a look at Emby Server and the Emby app. The app is free from the Google Play Store for browsing with an in-app purchase to unlock video playback.