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There are some errors about comand "$ rosrun usb_cam usb_cam_node" . It shows error message like the following. I have tried to open my camera (logitech C920) with guvcview successfully. However,it still can't work on ROS . using indigo ; workspace catkin

Thank a lot.

udooer@udoo:~$ rosrun usb_cam usb_cam_node

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