+2) Then type 'make' to build Libav. GNU Make 3.81 or later is required.
+
+3) Type 'make install' to install all binaries and libraries you built.
+
+NOTICE
+
+ - Non system dependencies (e.g. libx264, libvpx) are disabled by default.
+
+ - The default cflags include -g, if you want lean libraries you can either
+ pass --disable-debug or strip the debug symbols at a later time.