+boost::mutex CUDAJ2KFrameEncoder::_mutex;
+boost::condition CUDAJ2KFrameEncoder::_condition;
+std::vector<CUDAJ2KFrameEncoder::Input> CUDAJ2KFrameEncoder::_queue;
+std::map<std::pair<int, Eyes>, dcp::ArrayData> CUDAJ2KFrameEncoder::_output;
+
+boost::optional<dcp::Size> CUDAJ2KFrameEncoder::_size;
+boost::optional<Resolution> CUDAJ2KFrameEncoder::_resolution;
+
+