Option to add face close up video to a full body shot video for better tracking results

ATM the face tracking and especially the mouth tracking is less than ideal. 

It will be great you had an option to add a secondery close up video of the face to the "main"  full body shot video. 

They of course need to be synchronized and in the same duration. 

This way your engine will have more pixels to work with the facial and mouth expressions.

Giving much better results.