/usr/share/doc/gstreamer1.0-plugins-good/AUTHORS is in gstreamer1.0-plugins-good 1.8.0-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gstreamer1.0-plugins-good/../libgstreamer-plugins-good1.0-0/AUTHORS