You can stream video from your phone over WiFi network or if you're experiencing lagging, over a USB cable. All that you're require to do is install the app from the app store on Android or iPhone/iPad and run the Windows application which acts as a client to the server on your device. The application is quite useful as a program to replace your PC's webcam which is usually low megapixel and lower quality than your phone's camera, especially if you own a flagship model. Iriun Webcam is an ingenius little application that turns your phone's camera into a webcam that can be used as a video input for Windows without the need for special software.