YouTube Shortcuts

YouTubeShortcuts.txt

J - Jump back 10 seconds
K - Pause/Resume
L - Jump forward 10 seconds
M - Mute/Unmute audio
F - Enter/Exit full screen
Open bracket/shift-comma will decrease playback speed;
Сlose bracket/shift-period will increase playback speed.
Comma (,) - jump back a few frames while paused (tap fast or hold for reverse slow motion);
Period (.) - jump fwd a few frames while paused (tap fast or hold for forward slow motion).
Up and down arrows can be used to adjust volume of YouTube’s video.
Left and right arrows on your keyboard will help jumping back and forward 5 seconds.

Bypass restriction (forced login)
Change this: https://www.youtube.com/watch?v=a5FvgdI6h-c         
to: https://www.youtube.com/v/a5FvgdI6h-c
Bookmarklet:
javascript:(function(){  let url = location.href;  let index = url.indexOf('=');  let newUrl = 'https://www.youtube.com/v/' + url.substr(index + 1);  location.href = newUrl;})();