This extension for Mozilla Firefox reaches the possibility of downloading videos hosted in Youtube and Google Video form the browser. It installs easily and adds an icon with which you can download the video you are watching now.

The plug-in accepts several video formats and the most popular sites of this type, so you will not require installing extra applications for downloads and you will do it from the comfort Firefox offers us. Other information to consider is that you can integrate a Fast Video Download Firefox Extension with the download manager you have installed.