Chrome Extension: Social Video Downloader (v2.0)
Add from Chrome store
Recommended
Or
Download extension .crx How to:
1. open chrome and go to: chrome://extensions/
2. drag and drop .crx file to there.
Updated v2.0: supported more sites: facebook.com, youtube.com, vimeo.com, dailymotion.com
If this extension is useful to you, please leave a review and rating. That will motivate us to improve our product better.
Click to "REVIEWS" tab then "Rate this extension" 
This extension helps you download any videos from Facebook. Download buttons will appear under videos on facebook.com.
How to ?
1. Click Add to Chrome Now to go to Chrome Store.
2. Click to "ADD TO CHROME" to install it.
3. Open facebook.com, download buttons will appear under videos.