A trailer for a book is a promotional video or short film that is meant to capture the attention of the viewer and interest them in the book. It is the literary equivalent of a movie trailer.
A trailer for a book is also sometimes referred to as a book trailer, book preview, or book clip. It can range in length from a few seconds to several minutes.
Book trailers are a great way of introducing potential readers to the world of the book without giving away any spoilers. They can provide a sneak peek of the plot, characters and setting of the book. They often contain elements such as recorded author speaking, brief description of the plot, snippets of the cover design, visuals, voiceovers, background music, animated sequences, sound effects, or a combination of all these elements.
Book trailers are now being used by authors and publishers in different ways, from online book launches to traditional catalogs or print book displays. They can be posted on social media platforms for viral marketing or embed into websites for promotion.
Creating a trailer for a book is an effective way to help readers get to know the characters and plot of the book in a short amount of time.
For some tips and examples of great book trailers take a look at this article:
https://ebookfriendly.com/book-trailers/