ISDCFMetadata::ISDCFMetadata (cxml::ConstNodePtr node)
: content_version (node->number_child<int> ("ContentVersion"))
, audio_language (node->string_child ("AudioLanguage"))
+ /* Old versions contained this tag, but not these details are held in content */
+ , has_subtitle_language (static_cast<bool>(node->optional_node_child("SubtitleLanguage")))
, territory (node->string_child ("Territory"))
, rating (node->string_child ("Rating"))
, studio (node->string_child ("Studio"))