Ffmpeg build process

Prerequisites (This Tutorial's Environment)

1. Android Studio 2.1
2. Gradle Build System (com.android.tools.build:gradle:2.1.0-alpha1)
3. NDK r11
4. Ffmpeg 3.0 (https://www.ffmpeg.org/download.html)

1. Compile x264 using Android toolchain

2. Compile ffmpeg using Android toolchain

3. Ndk build using generated shared libraries