how to download video from youtube in opera on pc easy way

hi guys many of you visit youtube lots of time but sometimes u become sad coz u can't download video from there so now will you happy bcoz i am posting article on 

how to download video from youtube in opera on pc

1st open your opera

2nd click on file>manage extention> add extention

3rd search for extention "savefrom.nethelper"

4rth install english version

then go to youtube and then there willl be a option "download" select quality and enjoy

note:this is only tested in english version