A negotiation results in one of them becoming the group owner, which is similar to an access point (AP). Next, the source initiates a connection to the selected sink. The source collects the responses and presents them to the user or chooses one on the user’s behalf. One of them-typically, the source-scans for a list of the other-in this case, the sink.

The specification describes how connections are established using a prescribed series of steps.īoth the source and sink start by listening for a Wi-Fi Direct layer 2 beacon on the 2.4-GHz–band social channels. Briefly, the Miracast spec defines how to send MPEG4 (H.264) video from a source device to a sink device via peer-to-peer networking using a Wi-Fi Direct* (802.11) connection. It is not an application, although you’ll often hear the term Miracast app to describe this functionality. Miracast is not a device or software but rather the name of the technology described by the Wi-Fi Alliance specifications. Wi-Fi Alliance's Miracast* & Intel® Wireless Display Each technology I discuss here approached the challenges from a different starting point, and each gained market share with different operating systems, devices, and focus. By looking at two early use cases (a small device wirelessly displaying its screen contents on something larger and a smart TV displaying Internet content), you can see how the split between proprietary and open standards came about. This article looks at the differences among the top three technologies-Apple AirPlay* Google Chromecast* and the Wi-Fi Alliance's Miracast*, which includes Intel® Wireless Display (Intel® WiDi)-outlining the advantages and disadvantages of each from a developer’s point of view.Īs primary devices become smaller, the preferred display sizes have become larger. But how users access that second screen varies by device and operating system.

Using more than one screen is becoming commonplace for watching videos, playing games, sharing pictures, and even business uses, including Microsoft PowerPoint* presentations. Join our communities for the Internet of Things, Android*, Intel® RealSense™ Technology and Windows* to download tools, access dev kits, share ideas with like-minded developers, and participate in hackathons, contests, roadshows, and local events. Intel®Developer Zone offers tools and how-to information for cross-platform app development, platform and technology information, code samples, and peer expertise to help developers innovate and succeed.

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