To download the Facebook, first you need to know the video URL for example : http://www.facebook.com/video/video.php?v=136338943065575 . below is the steps
- Copy the facebook video URL.
- Go to http://www.facebookvideodown.com/
- Paste the facebook video URL
- Click "Download this Video" then a new windows pop up.
- Right click the video and click "Save video as"
