FFmpeg examples README----------------------Both following use cases rely on pkg-config and make, thus make surethat you have them installed and working on your system.1) Build the installed examples in a generic read/write user directoryCopy to a read/write user directory and just use "make", it will linkto the libraries on your system, assuming the PKG_CONFIG_PATH iscorrectly configured.2) Build the examples in-treeAssuming you are in the source FFmpeg checkout directory, you need to buildFFmpeg (no need to make install in any prefix). Then you can go into thedoc/examples and run a command such as PKG_CONFIG_PATH=pc-uninstalled make.