/usr/lib/x86_64-linux-gnu/libQt5GStreamerUtils-1.0.so.0 is in libqt5gstreamerutils-1.0-0 1.2.0-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libQt5GStreamerUtils-1.0.so.1.2.0