If you ever found yourself repeatedly starting and stopping an
online video clip because it wouldn't buffer fast enough or
felt that Flash was slowing your browser down to a crawl, you
should try Video DownloadHelper for Firefox.
Video DownloadHelper is a free add-on, and it has been around
for years. With almost six million downloads and over 3,000
reviews giving it an average of over four stars, this is one of
the best ways to download videos off YouTube, Vimeo, and a slew
of other video-hosting websites.
The link below will help install the Video Downloadhelper
Add-On to your Mozilla Firefox browser. This step is
required.