In order to fast build project it doesn't includes souces libs for ffmpeg and SDL2
All ffmpeg libs are ready to build from https://github.com/tanersener/mobile-ffmpeg.git
SDL2 build for Android is well documented at https://wiki.libsdl.org/Android
For playing videos, all happens here:
ffplay.c
cmdutils.c
Tested with RTSP and MP4 streaming.
SSL is not capable.