Why is my exported video only showing the top half?
I don't understand why the exported video is only showing the top half of my photos. Here is the working view:

Here is how it looks after encoding:

Any guesses for what I'm doing wrong?
Sorry, I'm self-taught, so pretty ignorant, though I've successfully made half a dozen videos before with Premiere Pro, so I'm not sure what I've done differently.
I appreciate your help!
