How to download Youtube video in Firefox

If  You need to download YouTube video in Mozilla Firefox use following step for download the video

First open Mozilla Firefox

Click on Menu and select Add-ons

Type YouTube video download and press enter

Select YouTube Video and Audio

Click on Add to Firefox

Click on ADD

Click on Okey, Got It

Now YouTube Video and Audio Downloader Add in Firefox

Now open YouTube.com play a video Click on YouTube video and audio downloader symbol  and select Quick download

Now video Download started