/usr/share/doc/libmedia-dev/changelog.Debian.gz is in libmedia-dev 0.1.0+git20151016+6d424c9-0ubuntu7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libmedia-dev/../libhybris-common1/changelog.Debian.gz