How can two identical nodelets in one process remap topics and services?

edit

I want to run a stereo pair of 1394 cameras as nodelets. It would be good to run both in the same address space with stereo_image_proc. But, I can't figure out how to remap the topic and service names to do that.

With nodes, I can get the right topic and service names like this:

<launch>
 <group ns="stereo" >

   <!-- left camera -->
   <node pkg="camera1394" type="camera1394_node" name="left_node" >
     <rosparam file="$(find camera1394)/tests/left.yaml" />
     <remap from="camera" to="left" />
   </node>

   <!-- right camera -->
   <node pkg="camera1394" type="camera1394_node" name="right_node" >
     <rosparam file="$(find camera1394)/tests/right.yaml" />
     <remap from="camera" to="right" />
   </node>

 </group>
</launch>

The equivalent nodelet launch script does not work:

<launch>
 <group ns="stereo" >

   <!-- nodelet manager process -->
   <node pkg="nodelet" type="nodelet" name="camera_nodelet_manager"
         args="manager" />

   <!-- left camera -->
   <node pkg="nodelet" type="nodelet" name="left_camera"
         args="load camera1394/driver camera_nodelet_manager" >
     <rosparam file="$(find camera1394)/tests/left.yaml" />
     <remap from="camera" to="left" />
   </node>

   <!-- right camera -->
  <node pkg="nodelet" type="nodelet" name="right_camera"
        args="load camera1394/driver camera_nodelet_manager" >
     <rosparam file="$(find camera1394)/tests/right.yaml" />
     <remap from="camera" to="right" />
  </node>

 </group>
</launch>

The failure is that neither <remap> works and both nodelets try to declare the same service names: /stereo/camera/set_camera_info, /stereo/camera/image_raw/compressed/set_parameters, etc..

It seems that the <remap> has to be applied to the nodelet manager node, not the nodes doing the load.

So, how do I remap camera-->left for one nodelet and camera-->right for the other?

Or, is there some other way to solve this problem?