Running two nodes for two webcams with usb_cam

I'm trying to run two different webcams. What I understood was I need to create two different nodes and set the parameters differently to run them. Both are [Logitech C270 cameras](http://www.logitech.com/en-in/product/hd-webcam-c270). What I did was copy the usb_cam_node.cpp file to usb_cam_node1.cpp and usb_cam_node2.cpp. I then run them as follows: > `rosrun usb_cam usb_cam_node1 _video_device:=/dev/video1 _camera_name:=cam1`
> `rosrun usb_cam usb_cam_node2 _video_device:=/dev/video2 _camera_name:=cam2` I added executables to the CMakeList.txt as follows: >`add_executable(${PROJECT_NAME}_node1 nodes/usb_cam_node1.cpp)`>`add_executable(${PROJECT_NAME}_node2 nodes/usb_cam_node2.cpp)`>`target_link_libraries(${PROJECT_NAME}_node1`
>` ${PROJECT_NAME}`
>`${avcodec_LIBRARIES}`
>` ${swscale_LIBRARIES}`
>` ${catkin_LIBRARIES}`
>`)`
>`target_link_libraries(${PROJECT_NAME}_node2`
>` ${PROJECT_NAME}`
>`${avcodec_LIBRARIES}`
>` ${swscale_LIBRARIES}`
>` ${catkin_LIBRARIES}`
>`)`
However every time I execute one after the other, I get the following error. >[ WARN] [1458914475.903122037]: Shutdown request received.
>[ WARN] [1458914475.903222764]: Reason given for shutdown: [new node registered with same name] Quite obviously the nodes are different. Not sure what's going wrong.