how to make a movie of Photos of a persons face change over the years

Here's a possible solution to what you want:

0 - get screenshots of the faces as Keith suggested. Name them T1 thru Tx from earliest to current.

1 - get the free MorphX from the App Store.

2 - start with image Time1 and Time 2 and create a QT movie of the morph from T1 to T2.

3 - do the same with T2 to T3.

4 - repeat with each image till you reach the latest image of the person.

5 - now you can either import the QT movie files into your library and create a slideshow of them or join the many QT movies into one movie.

There is no way from the standard interface.

You would have to delve into the library and try to find the cropped faces of the individuals. I have no idea how the file names would relate to what you want to do, since I try to stay out of my library.

Those thumbnails are not user accessible, and I frankly know of no application with facial facial recognition features that makes those thumbnails accessible to the User. You need to crop the photos yourself and then export.

The face files, 480 px x 480 px, are located in the Photos Library/resources/media/face folder.

However, they are not sorted by person. You can COPY the faces folder to the desktop and then go thru them manually to separate people into their own folders. There's really no way to do it with AppleScript or Automator.

I don't have my Mac in front of me, but ISTR that there is a way to switch from full-photo view to faces only view. You would have to screenshot each face and add it to your movie.

That's the path you just have to right-click on the Photos.photoslibrary to get into there.

One major warning: moving, renaming, deleting or making any changes within the Library package risks damaging your library and major dataloss.

I want to compile from 20,000 to 50,000 images per face.

What duration or running time do you have in mind for this movie?

Do you need to go into another Photos Library? It would be simpler just to pick from the Finder. no?

Clever.