tranScreen is a commercial-grade Android device projection screen software for Android phones, Android tablets and other smart terminals with Android 5.0 or above. Screening expert software has mirror mode and movie mode. The mirror mode directly transmits the screen content of the Android device to the receiving end; the movie mode directly pushes the video file stored on the Android device to the receiving end in the form of a video stream, and plays the video stream on the receiving end, thereby implementing lossless transmission.