How big is the market for over-the-top services? A new study attempts to understand the potential reach of cord-changing and found that more than 70 million U.S. consumers are "considering making changes" to their pay-TV service. That's the result of a new GfK MRI report.

Nearly 15% of consumers who have pay TV service are planning to make changes to their subscriptions in the next six months. That's according to the Quarterly Video Trends Report for the third quarter, published by Digitalsmiths and based on a survey of more than 3,000 consumers in the United States and Canada.

Video viewing, consumption and ad spend all point north. Yes, that's a huge oversimplification -- intentionally so. But as the industry heads into the holidays, here are some key stats underscoring the strength in digital video.