You may not know but youTube takes screenshots of the videos you upload, there are usually 2 main images (one big thumbnail and 1 small thumbnail). Here is how you can display YouTube Video thumbs on your webpage.
The urls are in this format (the v param is what we need):
7 Habits of Successful CTOs
"What makes a great CTO?" Engineering skills? Business savvy? An innate tendency to channel a mythical creature (ahem, unicorn)? All of the above? Discover the top traits of the most successful CTOs in this free guide.