AirPlay and External Displays in iOS apps

AirPlay enables apps to wirelessly stream music, video, or even the entire display to an HDTV via Apple TV. Get an overview of AirPlay capabilities and see how it creates entirely new possibilities for games, media apps, and more. Learn how your apps can output visuals and audio to a second display wirelessly over AirPlay or through a connected cable. Understand the key principles for driving external displays from iOS and gain insight into recommended practices to enrich the user experience and optimize performance.

WWDC 2011 - iOS