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Optical root of the movement is different from the actual head movements.
1. When recording motion capture can be fixed completely head maker Is there a way?
2. The error in the recorded data Is there a way to fix?

Hello -

Errors in recorded data can be adjusted with the editor after it has been trajectorized. You can fix marker swaps, smooth, fill gaps, or manually delete and re-draw curves if necessary for any marker.

In what program is the optical root different? How are you getting the data from Arena to that program?