Skynet:~# find / -name "libav*"
/usr/share/doc/libavahi-common3
/usr/share/doc/libavahi-client3
/usr/share/doc/libavahi-client-dev
/usr/share/doc/libavfilter-dev
/usr/share/doc/libavformat52
/usr/share/doc/libavcodec-dev
/usr/share/doc/libavformat-dev
/usr/share/doc/libavdevice-dev
/usr/share/doc/libavcodec52
/usr/share/doc/libavahi-common-dev
/usr/share/doc/libavutil-dev
/usr/share/doc/libavahi-common-data
/usr/share/doc/libavutil49
/usr/share/doc/libavfilter0
/usr/share/doc/libavdevice52