Why are my vertical or portait photos getting cut off at the top and bottom?
You can keep the vertically oriented (portrait) photos from being cut off by making the key frames on the photo larger than the photo itself, so that the height of the key frame matches the height of the photo. Photo to Movie can do this automatically for you using motion templates. In the motion template setup, uncheck the box that says ‘Keep Motion Within Photo.’ For new photos that you drag into the document, change this setting in the Preferences dialog. For existing photos in the timeline, select the photos in the timeline and then click the ‘Motion Templates…’ button in the inspector and change the setting there.