Facebook now allows to you easily embed videos on web pages outside Facebook. That means if you come across an interesting video on Facebook, you can easily put it on your blog without having to direct your audience to the Facebook website.
Facebook still uses the Adobe Flash player to embed videos when your website is viewed on a desktop. It automatically switches to the HTML5 format on mobile devices but if someone is viewing your website from a desktop or laptop, they would need the Shockwave Flash plugin enabled to view your embedded videos.