/usr/lib/x86_64-linux-gnu/libdc1394.so is in libdc1394-22-dev 2.2.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libdc1394.so.22.1.7
/usr/lib/x86_64-linux-gnu/libdc1394.so.22.1.7