Video DownloadHelper is a very useful Firefox extension that allows you to download any multimedia file. It works by installing a button on the interface of your Firefox browser, which becomes active when it registers the presence of multimedia content on the page.

What are the key features of Video DownloadHelper?

Video DownloadHelper is a plug-in for Firefox browser that is used to download videos or images online. When it detects a video, the icon becomes active so the user only has to click on it to get the video.
Video DownloadHelper can download multiple videos simultaneously.
Various formats are supported by this program: MOV, WMV, MEPG, AVI, FLV, JPEG, GIF, PNG, among others.
The plugin supports almost all sharing websites, such as YouTube, MySpace, Dailymotion and many more.
Video DownloadHelper is highly customizable: users can manage history, set the minimum size of videos to download and personalize many other settings.