[ros-users] Can't access to Firewire camera

Hi everyone,

I wrote a node to broadcast the images into the network. I recently
re-installed opencv2 and the samples are working with the firewire camera as
well as the coriander application. However I wasn't able to run with this
simple code up here:

#include <ros/ros.h>
#include <opencv/highgui.h>
#include <cv_bridge/CvBridge.h>
#include "sensor_msgs/Image.h"
int main(int argc, char** argv)
{
  ros::init(argc, argv, "image_broadcaster");
  ros::NodeHandle nh;
  CvCapture* cam = cvCaptureFromCAM(-1);
  if (!cam)
 {
    ROS_ERROR("cv_image_broadcaster reports: Cannot get the CAM");
    exit(-1);
  }
 ...
 ...
}

The camera isn't recognized as the compiler says: "cv_image_broadcaster
reports: Cannot get the CAM"

manifest.xml:
<package>
<description brief="image_broadcaster">

     image_broadcaster

</description>
<author>Akansel Cosgun</author>
<license>BSD</license>
<review status="unreviewed" notes=""/>
<url>http://ros.org/wiki/image_broadcaster</url>
<depend package="roscpp"/>
<depend package="sensor_msgs"/>
<depend package="cv_bridge"/>
<depend package="opencv2"/>
</package>

What do you think might be the problem?

Thanks