In this case, you would see the “Insert Video” dialog box appear, where you can navigate to and then select the video file to insert into the PowerPoint slide. If using PowerPoint 2013, you can select the “Online Video…” command from the “Video” button’s drop-down menu to display the “Insert Video” window.f you have the video embed code from a video website, then you can paste the code into the “From a Video Embed Code” field and then click the “Insert” button at the right end of the field to insert the video into the presentation slide.