HI, this script will create a Bezier node from selected Tracker node, this Bezier node will have tracking information from selected tracker node, so Bezier will follow the tracked object.

Bezier also will copy label of Tracker node, so if you labeled your Tracker node "Head", Bezier node will have same label! :)

If nothing is selected or selected node is not Tracker node - you will have clean Bezier node

I do use this script with shortcut "o"

please put this lines to your menu.py

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import bezierTracked
 
m=nuke.menu('Nuke')
n=m.addMenu('User/Operators',icon="my.png")
n.addCommand('TrackToBezier','bezierTracked.bezierTracked()',"o")