Facebook has become most popular social network besides twitter. Facebook allows you to share status, links, photos, and videos. Users can encounter two types of videos; Videos that are hosted on Facebook after they are uploaded by users, and videos that are embedded in messages and wall posts. Like Youtube, Facebook don't not offer official feature to download video on Facebook. You can only watch video online. On Firefox, you can use add-ons to download Facebook Video into your local computer and play any time you want without internet connection.
How to Download Facebook Video in Firefox?
There are several add-ons that you can use to download Facebook Video into your local computer. Click here if you don't know how to install add-on on Firefox.
Credit: addons.mozilla.org
Download YouTube Videos + Flash Video Downloader / Download-Helper
NetVideoHunter Video Downloader
Basically all add-ons will put icon on toobar for downloading video if users open site that contain video like on Facebook. Some of them allows you to automatically convert video from flv into another video format like .mp4.