Normally, the responsive lightbox embed allows viewers to click on the video thumbnail in order to launch the lightbox player.
Instead, you may want to use a button or other HTML element to launch the lightbox player, instead of using the thumbnail.
Learn more about the difference between the inline and lightbox embed, including how the lightbox embed normally behaves.
The sample code below will show you how to launch the responsive lightbox embed with a button.
The code hides the image tag of the player in the body. Once you click the button, the script uses the V4 player API to open the lightbox of the player in the hidden image tag.