i recorded point cloud data using

>>rosbag record /camera/rgb/points /tf

then to convert the bag file to pcd i did:

>>rosrun pcl_ros bag_to_pcd 2012-06-28-07-46-52.bag /camera/rgb/points ./pointclouds
Creating directory ./pointclouds
Saving recorded sensor_msgs::PointCloud2 messages on topic /camera/rgb/points to ./pointclouds

and it just hangs there, does nothing i guess as i have been waiting for 15 min. My bag file is of 20Mb.

Any ideas what's wrong ?