While video tuts are good in that they show things dynamically, a lot of English as a 2nd language visitors can't pick up on the live spoken English. They would rather read an automatically translated version or use a dictionary.

I'm an ESL and I remember when I just moved to the English speaking country, I couldn't understand TV or radio for at least a couple of years, even though I was studying English for 10 years prior to that and TV and radio speakers usually speak very clearly and have good English. It's just the slang and accents differs so much that it's difficult to catch what the person is saying. Anyone who studied a second language can related to that.

On the other hand, when you do a video tutorial, you must follow a script of some sort. That script is the text version of the tutorial. Who said you can't have both?