MediaBox is an easy and lightweight vanilla JavaScript library which displays and plays Youtube or Vimeo videos in a fullscreen, responsive, modal-like lightbox popup.
Yet another Youtube lazy loader that delays the loading of Youtube video player to improve the performance of your web page.
llyv.js is a Youtube Video lazy load library which allows the user to load Youtube Video Players on demand.
vLite.js is a native JavaScript plugin designed for creating custom HTML5 and Youtube Video players with your own styles.