Firefox is a great browser, no doubt and I use it extensively. Before firefox, I used opera but now a days I am using firefox due to availability of many add-ons.

There are different add-ons which I use with firefox like Firebug and Shareaholic addon to share different posts and sites with my friends on twitter, facebook etc.

Similarly I found a very useful addon to download the videos from youtube in different formats like FLV, 3GP, MP4 and HD quality.

Procedure:

The procedure to download the youtube videos on your computer in different formats is very simple.

1. Open your firefox browser.
2. Go to Easy YouTube Video Downloader Add-on homepage.
3. Click on add to firefox.
4. After installation, restart your browser.
5. Enter the youtube address.
6. Play any video.
7. As the video is played, you will see the download links on right sidebar under video URL and embed address as shown in picture below.
8. Click on download and there you go.