
Jun 20, '12 07:30:00AM • Contributed by: kirkmc
Use the following keys to:
J - skip back 10 seconds
K - pause/play
L - skip forward 10 seconds.
These only work with Flash videos; if you load HTML5 videos on YouTube, these shortcuts don't work.
It's worth noting that some websites mention that you can use arrow keys and the spacebar to perform the above actions, but these don't work on Macs.
Why don't you try it out with this video by one of my favorite artists, The Grateful Dead, performing Ripple, from a concert I attended more than 30 years ago.