rosbag play MY_FILE.bag
rosrun image_proc image_proc __ns:=forward_camera
rosrun image_proc image_proc __ns:=down_camera
Then, you can do
rosrun sub_launch camera_views
as usual.
roslaunch legacy_vision legacy_vision.launch camera:=forward_camera
rosrun actionlib axclient.py /find2_forward_camera
(Change "forward" to "down" as appropriate.) Then, change object_names to
['shooter'], for example, and click "Send Goal".