Install msys2 Install the 64bit msys2. I downloaded msys2-x86_64-20161025.exe and installed it on C:\local\msys64. Install necessary tools Run msys2-64 and install tools as follows. $ pacman -S make pkg-config diffutils $ pacman -S mingw-w64-x86_64-yasm mingw-w64-x86_64-gcc mingw-w64-x86_64-SDL$ pacman -S make pkg-config diffutils $ pacman -S mingw-w64-x86_64-yasm mingw-w64-x86_64-gcc mingw-w64-x86_64-SDL Install git and obtain source files $ pacman… Continue reading Build ffmpeg-debug with Windows10 64bit