は、あなたのplugin_pathにスクリプトfilmMoveManipの.pyを追加し、ファイルヘッダ内の使用ガイドに従います。
# filmMoveManip.py
# Scripted plug-in that displays a manipulator that
# modifies the film translate horizontal and vertical
# values.
#
# To use this plug-in:
# 1. execute the following Python:
# import maya
# maya.cmds.loadPlugin("filmMoveManip.py")
# maya.cmds.spFilmMoveManipCtxCmd('spFilmMoveManipContext1')
# maya.cmds.setParent('Shelf1')
# maya.cmds.toolButton('spFilmMoveManip1', cl='toolCluster', t='spFilmMoveManipContext1', i1="filmMoveManip.xpm")
# 2. Open the outliner and select a camera shape such as perspShape
# 3. A manipulator with a horizontal and vertical axis will be displayed.
# 4. Move the axis to modify the film translate
私はもっと慎重にコメントをお読みください。ありがとう兄貴 – Joey