This extension allows you to display additional images for a book beyond a single book cover, and also adds a place for you to add a video trailer.
Multiple images can be added, and the images can be re-arranged to the order you prefer.
Check this list to see what video hosting sites can be used.
When you view the Book Page, the cover shows up as usual. Underneath the cover, the additional images you’ve uploaded appear as thumbnails. When you click on a thumbnail, that image will replace the cover image.
The trailer video displays below the book summary.