Designed as an open alternative to Apple’s AirPlay Mirroring, Miracast is a peer-to-peer wireless screencast standard created by the Wi-Fi Alliance to allow a mobile device or computer to securely send up to 1080p HD video and 5.1 surround sound to a compatible display wirelessly.
Miracast connections are formed via Wi-Fi Direct that works in a similar fashion to Bluetooth. However, Miracast cannot be used to stream to a router access point.
Android 4.2, which is an updated version of Jelly Bean, supports the Miracast wireless display standard. As a result, users with compatible devices can beam their phone/tablet’s image to a compatible TV (or TV with a Miracast adapter) sans any wires.