Yes! We're not looking at the video as a way to understand your idea. That's what the written application is for. And yet so many people sit there in the video reading some prepared text in a monotone, which is not something that makes anyone look smart. Far better not to script the video. I'm not saying you should talk about random personal stuff like your favorite bands. You can talk about the startup. Just don't read a prepared statement. The best thing to talk about might be the background for the startup: how you met and how you got interested in this idea.