Customization Guide: Edit Video Size
You can customize the size of the video when in lightbox mode. This tutorial will show you how.
1) Editing Video Width
In the Widget code, locate “width=700“.
You can change 700 to any numerical value you want to change the width.
1) Editing Video Height
In the Widget code, locate “height=400“.
You can change 400 to any numerical value you want to change the height.