This is working example of WebRTC app from official webrtc src which can be built with the latest Android Studio(3.6.3).
This app uses a dependency to latest webrtc Android library: org.webrtc:google-webrtc:1.0.32006
- Go to https://appr.tc from any browser and create any room number
- Start the Android app. Enter the room number and press call. Video call should start.