Its very simple actually, lets say for example, i write and submit an article on 'How to train your parrot to speak like a pro'. At the end of the article, in the resource box, say something like, 'To watch a video demonstration of this article, visit xx.com today. Hurry, the video will be pulled off from the masses soon!'
This trick helped increased the clicks from my articles to my sites. Next, on your site, get a vid about the relevant niche topic, post it on the site, and get your visitors to opt-in to watch part 2 of that video.
Hope that helps with your article marketing efforts..God bless..