by Demis Patti on WordPress.org
Requires at least: 3.9 Tested up to: 4.7.2 Stable tag: 0.3.6 Version: 0.3.6 License: GPLv2 or later License URI: https://www.gnu.org/licenses/gpl-2.0.

Plugin settings page image 1.
This plugin enables you to use the “Vegas Background Slideshow” for images on regular posts and pages. You can define a global slideshow, a fallback slideshow, and even slideshows on a per post basis. Read the help tab for more details on the options.
Your theme must support the core WordPress implementation of the Custom Backgrounds theme feature.
Your theme’s layout must be “boxed” somehow or an opacity should be added to the page content container for the background slideshow to be seen (of course…).
PHP version 5.4 or above.