I had to create individual mp4 files for all photos and their zoom effects. When I then integrated them into the main movie, a lot of the detail went away :-( Also, only a few times, the direction of the zoom out of the image is in the same direction as the zoom effect in the image itself - those look really cool. If the direction is not the same it feels somewhat jerky. Still, I like it a lot.
Happy Holidays and Happy New Year!!!