You can change the background of your PowerPoint slides using the "Format Background" feature located in the "Design" tab.

If you cannot use PowerPoint video background across slides, this post will help you. A video background in PowerPoint adds dynamism and visual appeal to your ...

Now let us see these steps in detail. On the Selection Pane, hide every placeholder on the first slide. Close the Selection Pane. Go back to the Slide Master tab and click the Background Styles button ...