Hello. You can use images with the same aspect ratio as in the preview. If you insert vertical images, you have to increase their size and you will lose part of the image from the bottom and from above

ok most of my images are vertical/portrait, can i adjust the size of this slide show? for example change the landscape/square size to portrait? shrink it a bit if you get what i mean

The project is fully customizable. If you have basic skills of work in AE, you can change the size and aspect ratio for placeholders. But I can’t guarantee that they will look good in the final composition. You may also have to change photo position in 3D space.

Hello. Duration can be increased. But not so simple. The project consists of 2 scenes for 37 seconds. You can duplicate these scenes. Also, inside each scenes you will need to duplicate and replace all placeholders with photos