At present, screen mirroring is mainly divided into three screen mirroring protocols, Miracast, Airplay, and DLNA. Among these three screen mirroring protocols, Miracast and Airplay belong to screen mirroring. From small screen to large screen, it belongs to the small screen becoming larger screen in the local area network, regardless of whether there is an external network. In DLNA push screen mirroring, if push Local audio and video do not need a network, but pushing online content requires an external network.
After understanding this principle, how to cast the screen without the network becomes simple.
When there is no network, we project the online video on the big screen, and you can choose the mirror screen mode.
Android, Windows phones, tablets, notebooks, and computers only need to use the Miracast protocol [Wireless screen Mirroring] to mirror the large screen. (PS: Miracast protocol is called differently in different devices, wireless screen projection, multi-screen interaction, and mobile phone screen projection are all it); while Apple mobile phones, tablets, and computers use the Airplay protocol [screen mirroring] to mirror the screen.
Prerequisites for mirroring:
- Both the sender and receiver devices must support the Miracast protocol;
- The sender device and the receiver device are in the same local area network.
Most of the current sender devices support wireless screen projection. In 2010, Apple launched AirPlay screen mirroring, and the iPhone has the function of wireless screen projection; in 2012, the Wi-Fi Alliance launched Miracast certification, and other devices such as Android and Microsoft also have it. It has the same function of synchronizing the screen in real time as the iPhone. Most of the time, our screen mirroring is unsuccessful because the receiver device does not support screen mirroring, so there are various free/paid screen mirroring software, professional screen mirroring equipment – AWIND wireless screencaster.
If you just cast the local audio and video, you can directly push the DLNA to cast the screen.
Prerequisites for local push screen mirroring:
- The push resources must be streaming media resources, which is what we often call audio and video content, while other content does not support push;
- The sender device and the receiver device are in the same local area network;
- The player on the sender device supports screen mirroringwith the [TV] logo, and the receiver supports screen mirroring.
Online resource push projection conditions：
- The push resources must be streaming media resources, and the player supports [TV] screen projection, such as Youtube, Huawei Video, etc.;
- The sender and receiver devices must have a network and support the DLNA screen projection protocol;
3, with the local area network. These screen mirroring conditions are indispensable. Only when these preconditions are met can we use the screen mirroring function as we wish.