I have seen the video.
Here are photos of what I am talking about.




You will see the year spelled out as: "a thousand foure honderd sixty and foure." This is year 1464. I don't see how you could ignore the one thousand. It's not the same thing as the numerals that say J.464 since the word "thousand" is spelled out.

I do not know if either of these pictures are from the first edition, but this online library gives the same information regarding this text: https://quod.lib.umich.edu/e/eebo/A05232.0001.001?view=toc