/usr/lib/x86_64-linux-gnu/libv4lconvert.so is in libv4l-dev 1.12.3-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libv4lconvert.so.0.0.0
/usr/lib/x86_64-linux-gnu/libv4lconvert.so.0.0.0