How to change the playback speed of a video in youtube

Youtube is one of the great sites created by paypal brothers for watching videos,uploading personal or public videos,which is now part of google products.

Do you know many of youtube videos play using HTML 5,in this sense youtube is called HTML 5 video player.
So whats the matter with HTML5 video player.
You might have observed these option while you are watching a video in youtube.


You cannot see all these options for every video on youtube,because this depends on uploader.

One of the option works handy is the "PlayBack Speed",when you want to change the speed of a video [may be because the audio is slow,or you want to get the matter much faster].

So if you cannot watch the option speed adjustments in youtube,you can do this by selecting the HTML5 player of youtube so that you can change the speed of videos.
To do this go to https://www.youtube.com/html5 and select HTML5 Player.


So with this you can watch all the videos with an extra option of "SPEED".