Change the speed on Youtube

I did a movie last night and thought why there is no way to scroll a movie faster or slower on Youtube?
I change the screen resolution to a higher quality and discover this:



Still scrolling speed increased eight times ...

Ps.
Grabbing a bunch of minuses from advanced users who have known this feature for a hundred years, began to look at the history of the issue.
1. March 20, 2010 YouTube has a function to stop downloading videos . Not less short article about very simple function. To the question of the unworthiness of the function description on Habré.
2. In 2012, articles began to appear on the possibility of changing the speed on YouTube. But for some this function works, for some it does not. Someone writes that this only works in long films, someone is talking about the html5 version of the player. There is a version that it works only in Chrome.
')
Here is an article about this - February 14, 2012. Almost a year has passed.
HTML5 player required. Therefore, from whom he should have the opportunity to accelerate / slow down.

Summing up the article.
Users who knew about this function and for whom she worked were able to demonstrate in the comments their skills, abilities and set minuses.
Those who did not know (like me) now know that there is an acceleration / deceleration of watching videos in Youtube and have learned how to turn this mode on.
It turned out that knowledgeable - the majority of those present at Habré, I lagged behind them.
Valuable advice prompted ProRunner , Mrrl , SowingSadness , lazarenco , phikus .
Thanks to all!