This article will explain how to use AirPlay on an iPod touch, iPhone, iPad or Mac computer.
There are two kinds of AirPlay. One is just AirPlay, which allows you to play movies, pictures, TV shows, etc. on the TV. The other is AirPlay mirroring, which allows you to see whatever is on your screen on the TV.
For AirPlay Mirroring:
To mirror to an Apple TV, you need a 2nd generation Apple TV or later, and software version 5.0 or later. For standard AirPlay, you need software version 4.2 or later.
If your device can support AirPlay, but not Mirroring, open up a supported app, such as Photos, Videos, or YouTube, and tap the AirPlay icon. In the below example in the Photos app, the AirPlay icon is in the upper right.