ffmpeg and SDL2 are needed for the compilation, i.e.

     port install ffmpeg-devel
     brew install ffmpeg sdl2
     apt install libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libswresample-dev
     apt install libsdl2-dev
     pacman -S mingw-w64-x86_64-SDL2 mingw-w64-x86_64-ffmpeg
