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1) Type './configure' to create the configuration. A list of configureoptions is printed by running 'configure --help'.'configure' can be launched from a directory different from the FFmpegsources to build the objects out of tree. To do this, use an absolutepath when launching 'configure', e.g. '/ffmpegdir/ffmpeg/configure'.2) Then type 'make' to build FFmpeg. 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.