This plugin is outdated and might not be supported anymore
Easy Backstretch

Easy Backstretch

Details
View on WordPress

Upload your image(s), set the Fade In effect, the in between slides time duration and the div you would like to apply the backstrech.
Backstretch is a simple jQuery plugin that allows you to add a dynamically-resized, slideshow-capable background image to any element. The image will stretch to fit the element, and will automatically resize as the window/element size changes.

Details

Plugin code:
easy-backstretch
Plugin version:
1.0
Outdated:
Yes
WP version:
3.6 or higher
PHP version:
or higher
Test up to WP version:
3.9.40
Total installations:
300
Last updated:
2014-05-14
Rating:
Times rated:
10
backstretch
fullwidth-slideshow
responsive-background
slideshow