You can add a video to Google Slides from YouTube, or by uploading from Google Drive. Here's how to do it.
You can add a border to a PowerPoint slide by adding a rectangle shape and removing the fill color, which will give the appearance of a border.
To manually crop a picture in Microsoft Word, Excel, or PowerPoint, select it, and in the Picture Format tab on the ribbon, click the top half of the split "Crop" button.