node->add_child("VideoLength")->add_child_text (raw_convert<string> (_video_length));
node->add_child("VideoWidth")->add_child_text (raw_convert<string> (_video_size.width));
node->add_child("VideoHeight")->add_child_text (raw_convert<string> (_video_size.height));
node->add_child("VideoLength")->add_child_text (raw_convert<string> (_video_length));
node->add_child("VideoWidth")->add_child_text (raw_convert<string> (_video_size.width));
node->add_child("VideoHeight")->add_child_text (raw_convert<string> (_video_size.height));