The Insert Wizard lets you select the video background you want to use on your slides and then select all the slides you want to add the video background to.

 

Select the Insert Wizard icon from the 123PPT Video Backgrounds Studio ribbon or toolbar and follow the wizard instructions to select a video background and then select all the slides of your presentation to add the video background to your entire PowerPoint presentation.

 

The Edit Slide Video function is perhaps the easiest way to add one video background to all the slides in your presentation and can do so with a single mouse-click.

 

Select the Edit Slide Video function and choose the video background you want to apply to all the slides in your presentation from the left hand pane showing all available video backgrounds. Now simply press the Apply To All button to apply your selected video background to all the slides in your presentation.