_player->disable_audio ();
_player->set_approximate_size ();
_player->Video.connect (boost::bind (&FilmViewer::process_video, this, _1, _2, _5));
_player->disable_audio ();
_player->set_approximate_size ();
_player->Video.connect (boost::bind (&FilmViewer::process_video, this, _1, _2, _5));