jquery.youtube-background
ESM / jQuery plugin for creating video backgrounds from YouTube, Vimeo or video file links.
LazyTube
LazyTube is an ultra-light Youtube video lazy load library which only loads/displays video thumbnails on the page and fetches the Youtube video player only when the thumbnail is clicked.
lazy-load-youtube-videos
Pure JavaScript library for optimizing the performance while loading multiple YouTube videos on the same page
iframe-lightbox
Responsive no-jQuery pure JS/CSS Lightbox for iframes, no dependencies, customizable aspect ratio, 5kb unminified source code, with demo
youtube-lazyload
Yet another Youtube lazy loader that delays the loading of Youtube video player to improve the performance of your web page.
youtube-iframe
If you have a ton of videos on your site, you're probably familiar with lazy loading.
vlitejs
vLitejs is a fast and lightweight Javascript library for customizing video and audio player in Javascript with a minimalist theme (HTML5, Youtube, Vimeo, Dailymotion)
lazy-youtube-player
NexosYT is a lightweight JavaScript library that helps you lazy load YouTube videos to enhance page load times and user experience.
mediaelement
MediaElement.js is a flexible and robust jQuery/JavaScript Audio and Video player plugin based on HTML5 mediaelement API.