/etc/vdr/plugins/xineliboutput/config is in vdr-plugin-xineliboutput 1.1.0+cvs20150907-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /var/lib/vdr/plugins/xineliboutput/config
/var/lib/vdr/plugins/xineliboutput/config