Is there a way of watching YouTube videos at higher than 2x speed?

Question

How to Speed Up YouTube Videos? (2x, 3x, 4x and Faster!)

Answer 1

1. Go to the video.
2. Press CTRL + SHIFT + J or COMMAND + OPTION + J to open the JavaScript Console.
3. Copy and paste the following:
   1. document.getElementsByTagName("video")[0].playbackRate = x
      1. x equals the speed you want; you can have it very specific, f.e. 1,15312 still works
4. Close the Console with CTRL + SHIFT + J or COMMAND + SHIFT + C.

Example for YouTube 3X Speed

document.getElementsByTagName("video")[0].playbackRate = 3

Have fun. :)

Tips and tricks:

• You have to do that for every new video, except when watching a playlist.
• Videos with higher speed than "4" won't have any sound.
• This command works for ads too ;)
• It definitely works on your desktop PC using Chrome.
• Save a note with the command on your desktop.

Answer 2

Making a bookmark with:

javascript: r = prompt("Enter Rate"); document.getElementsByClassName("video-stream")[0].playbackRate = parseFloat(r);

as the link allows you to choose your speed everytime. I personally make a couple different default ones with:

javascript: r = 4; document.getElementsByClassName("video-stream")[0].playbackRate = parseInt(r);

Replacing 4 with what I want. The first will allow non-integers like 1.5. The second only works with round numbers, aka 1,5,7 etc. I think it will not work above 15x though.