Video DownloadHelper aka Dwhelper is a Mozilla Firefox add-on which can download and convert videos from hundreds of website. I personally use this add-on there is barely a website from which it cannot download videos. Dwhelper can grab video from anything from IMDB to YouTube, Facebook, MegaVideo, Vimeo, Veoh and the like. It auto detects available videos on a webpage and provides options to download and convert them in various formats and sizes. With Video Downloadhleper, you can even download protected videos.
When you stream a video DownloadHelper icon (next to the URL bar) becomes active and displays the numerous video downloading formats when you click on the arrow next to Dwhelper icon. Just select a format to begin downloading the video.
The selected video will be downloaded in the selected format via Firefox download manager.
You can also use other options such as Copy URL, Social Share, Sent to mobile phone, etc for copying and sharing the video.
Install Video DownloadHelper for Mozilla Firefox