
Gstreamer::interfaces provides access to some of the interfaces in the gstreamer interfaces library. currently, that's gstreamer::propertyprobe and gstreamer::xoverlay.
the perl bindings follow the c api very closely, and the c reference documentation should be considered the canonical source.
this module is part of gtk2-perl.
to discuss gtk2-perl, ask questions and flame/praise the authors, join gtk-perl-list@gnome.org at lists.gnome.org.
also have a look at the gtk2-perl website and sourceforge project page, http://gtk2-perl.sourceforge.net