I was lucky enough to see him speak a few years ago, and he said that each video took him about 8 hours. He would record a line, add it to the video (or rereco

I was lucky enough to see him speak a few years ago, and he said that each video took him about 8 hours. He would record a line, add it to the video (or rerecord as necessary), and then move on to the next line. So, if anything, it made the process take even longer.