I watched the video, and in my opinion it is a colossal waste of time. Frederick A. Larson, a lawyer from my home state of Texas, claims that the star of Bethlehem was a convergence of Jupiter and Venus. ** you do not have permission to see this link **. He does not answer the basic question that Prof. Ehrman asks about the star:

How is it that a star—or any celestial body—can lead anyone to a particular town? And how can it then stop over a particular house?

Take a look at Prof. Ehrman’s October 5, 2013 post.

Howardmims, you ask whether Larson’s astronomy is accurate. I think you’re asking the wrong question. He may have a lot of accurate astronomy in his presentation, but is the presentation honest? Think about this for yourself. Larson says that the wise men were in Jerusalem and saw the star/convergence over Bethlehem, which is about 5 miles south of Jerusalem. Walk outside at night and try to identify a star that is over a point 5 miles south of your location. Think back to the presentation. What did Larson say that would make you think a star could be over a point 5 miles south of anywhere? He made it sound right when he said it, but does it make sense?