Video Lightbox This Guide will help you to add Video Lightbox. YOUTUBE SOURCE Drag and Drop Video Lightbox from left side Widget Panel. Now in Dialog box of Video Lightbox select Youtube from source section as shown in image below. After that enter Youtube Video URL. Select Cover Image if you need any. VIMEO SOURCE Select Vimeo from source section as shown in image below. After that enter Vimeo Video URL. Select Cover Image if you need any. HTML5 SOURCE Select HTML5 from source section as shown in image below. After that upload Video in any one format by clicking on Three Vertical dots as shown in image below. Note: In HTML5 Source you need to select Cover image for your video as shown in image below.