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Maybe try like this.

<launch>
   <!-- Camera Node -->
   <node name="$(arg camera_name)" pkg="uvc_camera" type="uvc_camera_node" output="screen" ns="$(arg camera_name)">
       <param name="device" type="string" value="$(arg device)" />
       <param name="camera_info_url" type="string" value="package://mcptam/calibrations/$(arg camera_name).yaml" />
   </node>
   <!-- camera_calibrator node -->
   <node name="camera_calibrator" pkg="mcptam" type="camera_calibrator" output="screen">
      <param name="cam_name" type="string" value="$(arg camera_name)"/>
      <param name="image_transport" type="string" value="compressed"/>
      <param name="image_topic" type="string" value="image_raw" />
      <param name="info_topic" type="string" value="camera_info"/>
  </node>
</launch>