增加addCamera的返回值校验

chenshijun

2019-09-24 e80ef6acf886a67fa9136fdc8312971cef91b534

 csrc/ffmpeg/property/VideoProp.hpp

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

      bool          gpu_acc_;
        
        int          gpu_index_;
		
        AVRational      sample_aspect_ratio_;

   };