Facebook is most popular social networking site and daily lots of people shares beautiful videos. Some videos are really very informative and you want to download it to your computer for future purpose but you can’t directly download the videos from Facebook.

Video DownloadHelper, a Firefox addon will let you download and convert Web videos from hundreds of YouTube-like sites. DownloadHelper is a tool for web content extraction and also works for audio and picture galleries. When ever you surf the web, DownloadHelper detects if it can do something for you, the icon gets animated and a menu allows you to download files by simply clicking an option. Not only Facebook and YouTube but it also works with MySpace, Google videos, DailyMotion, Porkolt, iFilm and many others.

When you are on a page that containing links to images or movies, you can download some or all of them at once. Moving the mouse over the items in the menu will highlights the links directly in the page to make sure they are the ones you want to pick up.

DownloadHelper also allows you to download files one by one, so that you keep bandwidth to surf the web. You can download DownloadHelper from here, keep in mind that this is Firefox extension.