There appears to be an issue with one of the videos The image tat displays says "Earn points by exploring great content!" below that [click / Explore / earn] and then below that "click to earn 10 crowns"
when you click on it - it opens a web browser in a new window, back in wizard101 the window changes to "Now exploring great content! (1 of 5) 00:00 with a button reopen page
What are you suppose to do here? if you close you get the "you watched only a few seconds" message
Follow the directions in the browser window outside of Wizard101 to continue viewing the content. It will then progress and you will see that you completed the video and earned the crowns in game.