Sending a custom video stream through WebRTC

WebRTC is used to create video call enabled p2p applications. By default it supports only local webcam and audio input to be sent to a peer. However, it might be useful to send a remote video stream to a peer - for example a RTSP stream from an IP camera.
In this post I'll focus on modifying the peerconnection_client example to send a remote RTSP stream to another peer.

Building libjingle for Android

Libjingle is a C++ library used to create peer-to-peer connections for voice-chat applications. It is included in WebRTC and bundled inside the Chromium source repository.
There are a couple of web pages with instructions out there about how to build the library for Android, but none of them seem complete.
This is where this post comes in.