google cast screen mirroring

Casting technology for Google Cast and ChromeCast

Google Cast is similar to DLNA, AirPlayer, and Miracast, which is a screen casting technology. Awind WiCS-2100 series wireless sharing and collaboration products support both Google Cast and ChromeCast.

How Google Cast works: The sender app uses the SDK to send the media content that needs to be screened to Google’s server, and the server notifies the receiver  Play (so both sender and receiver must have access to Google servers). The receiver runs a browser, which loads a corresponding web page according to the app ID and media information of the sender. This web page is provided by the developer of the sender app and is responsible for playing the corresponding media content. Even if the receiver is audio-only hardware like Chromecast Audio, the page will load and render.

The difference between Google Cast and Apple’s AirPlay or DLNA is that, first, it relies on Google’s server, which means that it must be connected to the Internet before it can be used. If there is only one local area network, it will not work. The second is that the latter two receivers are provided by the receiver itself. The developer only needs to provide the content to be played, but Google Cast needs to provide its own receiver app. The advantage of this is that the developer can highly customize (For example, you can customize the UI, or add complex functions such as barrage, lyrics scrolling, and music visualization), although the receiving end often does not run an open operating system such as Android, but because the receiving end app is essentially a web page, it is easy to develop.

ChromeCast and Google Cast From the official website of Google Cast, we can see that the role of Google Cast is to send the content of small screens (such as mobile phones, tablets, notebooks) to large-screen devices (google TV, chromeCast) through wireless (WIFI) for playback. That is, it provides multi-screen interaction functions from small-screen devices to large-screen devices. What Google Cast does is to provide SDKs based on different platforms that provide this function for application spending. These platforms have both the sender and the receiver. The sender includes IOS, android, and chrome browsers, and the receiver includes google TV, chromeCast Etc., it can be said that this set of solutions is relatively large and comprehensive (in terms of the platforms it covers).  And chromeCast is actually a specific implementation of the Google Cast mechanism. The characteristic of this implementation is that the chromeCast dongle on the receiving end is provided by Google itself, and the burden on the developer is limited to the application development of the sending end platform. Of course, the flexibility of the sending end Sex is also limited to the Google Cast API provided by google.

To summarize the relationship between Google Cast and Chrome Cast, in fact, Google Cast provides a set of APIs for interconnection between devices, and chromeCast technology is the specific implementation of this set of APIs. The advantage of this implementation is that it is used for application development. The developer provides the flexibility to develop with the Google Cast API (of course this can also be considered a limitation of the technology not supporting all apps).

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