Providing extra information on the video hosted on your page is called a Video Sitemap. A sitemap is an excellent way to help Google find and understand the video content on your site, especially content that was recently added or that we might not otherwise discover with our usual crawling mechanisms.
Used specifically to help google understand video content on your page
Helps Google find content on sites that are approved for Google News.
Helps Google find content on sites that are approved for Google News.
This by far the most common type of sitemap. It’s usually in the form of an XML sitemap that links to different pages on your website
Search Engine
Reputation 
Paid 
Content
Video
App 
Social Media