Produce a marketing video with sound for website

We are looking for a creative marketing video to have at the top of our "pitch page" for an ebook of coffee. This should be from 15-20 seconds, with sound and/or voiceover and be able to be run in a loop that is a smooth transition and not able to be perceived that it is "looping." A draft copy of the book will be provided to use some stills from the pages, as well as two much longer videos that we have so that you can use some excerpts if helpful. Also, we have a few graphic available, purchased with rights, both video and still photos. The videos should NOT be in a "cartoon like" appearance.