Описание тега video.js
Video.js is an open source JavaScript framework for embedding and working with HTML5 and Flash video. It uses the HTML5 video tag as an embed code, and has a common HTML/CSS skin and API for both HTML5 and Flash.
What is video.js?
Video.js is an open-source javascript and css library that makes it easier to work with and build on html5 video. This is also known as an HTML5 Video Player. it's licensed under the Apache License, Version 2.0. View the license file.
Video.js provides a common controls skin built in HTML/CSS, fixes cross-browser inconsistencies, adds additional features like fullscreen and subtitles, manages the fallback to Flash or other playback technologies when HTML5 video isn't supported, and also provides a consistent JavaScript API for interacting with the video.
It can be extended to work with additional players, like YouTube and QuickTime. Video.js also support HLS, 360 degree, live streaming and panorama videos.