CustomCamera - Demonstrate how to create an EasyAR app with a non-system-API-based camera It uses system API as a sample and don't support Android USB camera out-of-the-box. For Android USB camera, libuvc integration is needed.(https://stackoverflow.com/questions/37828376/android-open-external-uvc-camera-instead-hardware-camera/42432233) Notice: don't use this sample for Windows USB camera, as they have built-in support in EasyAR.