Video Post w/ Cover Image
This video post is using a placeholder image to cover embed video. Clicking image loads and reveals the embed video. It’s useful if you wish to display custom cover image for a video. Also hiding embed video and showing an image first helps faster page loading.
Videos, images and sliders can be used with Featured Image / Video option as well as directly inside the WordPress visual editor.
Credits : http://refikanadol.com/works/infinity-room/