This ROS node is a wrapper for the v4lctl tool. It provides two services to set or get particular bttv parameter. If a yaml file will be provided a save and restore capability will be enabled. Parameter are then loaded and set automatically in the capture card when starting the node. Changed parameter are stored to a yaml file when the program ends. Additionally a dynamic reconfigure rqt gui is available to manipulate bttv parameter.
For additional documentation see http://wiki.ros.org/uavc_v4lctl