Welcome to the WebM VP8/VP9 Codec SDK! COMPILING THE APPLICATIONS/LIBRARIES: The build system used is similar to autotools. Building generally consists of "configuring" with your desired build options, then using GNU make to build the application. 1. Prerequisites * All x86 targets require the Yasm[1] assembler be installed[2]. * All Windows builds require that Cygwin[3] or MSYS2[4] be installed.