As discussed in this SpeedCurve blog post, video use on the Internet over the past decade has been exploding.
Accompanying that growth is additional bandwidth, which is burdensome for your IT budget and for your visitors. Beyond the expense, you must also consider user experience. The heavier the page, the longer it takes to load, and the greater the likelihood that visitors will abandon your site. Plus, page-load speed is an important factor in SEO ranking.