text: Title: Head extraction size
  Body: ## Expected behavior
  
  Extract head aligned with more tight crop of the head for frontal shots, so we can use lower model resolution and faster training, rather than trying to compensate with higher res.
  
  ## Actual behavior
  
  Frontal aligned are extracted at 40% of aligned frame, so there is ~60% of frame resolution wasted. 
  
  ## Steps to reproduce
  
  extract head (aligned)
  
  ![head small](https://user-images.githubusercontent.com/58276510/102229614-eaa34900-3ee3-11eb-84c7-56e7e9b9e762.jpg)
  