What is a Facebook video widget?
A Facebook video widget allows you to share your Facebook videos on your website. The Facebook help pages show you how to post a video to your Facebook page.
How do I add a Facebook video widget to my website?
Go to Website > Widgets.
Click Add in the top right.
Enter the Title for the widget.
Under Type, choose Facebook video.
Click Next.
Enter the URL for the Facebook video (to get the Facebook URL, right-click on the video and choose 'Show video URL').
Click Add.
You can now add this widget to your website.