Picture Library Slideshow web part is an out-of –the-box web part which is used to create a slideshow.
Go to the SharePoint site.
Go to Site Actions => Edit the Page.
In the ribbon interface, go to Editing Tools => Insert => Web Part.
In the Categories, select Media and Content => Picture Library Slideshow Web Part.
Click on Add.
You can configure the web part as shown in the following.
Duration to Show Picture (seconds) The amount of seconds before a new picture will appear.
Picture library Select the picture library.
Library view Select the view.
Picture Display Mode Show the pictures in random or sequential order.
Display with The pictures can be shown with the title and description.
Show toolbar A toolbar can be shown for selecting the next or previous picture or to stop the slideshow.