add interface rec duration

zhangmeng

2019-10-19 87fea24e8bba1bfbee707cdaa6f7979451531acc

 csrc/ffmpeg/property/VideoProp.hpp

@@ -39,7 +39,8 @@
      int          udp_port_y_;

      bool          gpu_acc_;
        
        int          gpu_index_;
		
        AVRational      sample_aspect_ratio_;

   };