-libam7xxx depends on 'libusb-1.0' and optionally on 'libav' or 'ffmpeg' for
-its example programs, the build system used is 'cmake'.
+libam7xxx depends on 'libusb-1.0' and optionally on 'libav' or 'ffmpeg' (3.1+)
+for its example programs, the build system used is 'cmake'.