Facebook is the most popular community to share in the form of pictures and video. But unlike YouTube there is no direct way to download videos from Facebook. But there are some other way though which we can easily download videos we like
1) Download from online website
To download follow these stpes-
a) First play your Facebook video and copy this link from the browser.
c) Your file will start downloading. Give it some time to download, which depends upon the file size.
2) Internet Download Manager
Internet Download Manager (IDM) is a tool to increase download speeds by up to 5 times, resume and schedule downloads. Comprehensive error recovery and resume capability will restart broken or interrupted downloads due to lost connections, network problems, computer shutdowns, or unexpected power outages.
As above play your Facebook video and copy this link from browser and past in IDM and then download to your pc.