/usr/share/doc/gstreamer1.0-plugins-bad/README.Debian is in gstreamer1.0-plugins-bad 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-bad/../libgstreamer-plugins-bad1.0-0/README.Debian