/usr/lib/x86_64-linux-gnu/libQt5GStreamerQuick-1.0.so.0 is in libqt5gstreamerquick-1.0-0 1.2.0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libQt5GStreamerQuick-1.0.so.1.2.0