Using AirPlay
Using your iPhone, iPad, or iPod Touch, you can AirPlay Redbox On Demand movies and TV shows right to your Apple TV.
To enable this service, do the following:
1. Make sure your iPhone, iPad, or iPod Touch is connected to the same wireless network as your Apple TV.
2. Open the Redbox app, and go to your Library found in https://www.redbox.com/library to find the title you want to AirPlay.
3. Start playback by tapping the AirPlay icon and selecting your AirPlay device.
More information on AirPlay is available through https://support.apple.com/en-us/HT204289