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+libv4l is a collection of libraries which adds a thin abstraction
+layer on top of video4linux2 devices. The purpose of this (thin)
+layer is to make it easy for application writers to support a wide
+variety of devices without having to write seperate code for
+different devices in the same class.
+
+You may need libv4l to use some video applications - see the README
+in the libv4l documentation folder for usage instructions.