/usr/lib/x86_64-linux-gnu/libwx_gtk2u_media-2.8.so is in libwxgtk-media2.8-dev 2.8.12.1+dfsg-2ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libwx_gtk2u_media-2.8.so.0