More Americans are using connected TVs now than a year ago. About 74% of online Americans use some form of Internet-connected TV set, and that's a big jump from 59% last year, according to new research from Frank N. Magid Associates.

Digital video advertising remains on a fast track for growth, but its trajectory is slowing. That's not a surprise, per se, given how quickly this segment rose over the last decade. Nevertheless, a new study from eMarketer shows how U.S. digital video ad spend will likely play out in the next four to five years.

In the next five years, video will stretch the limits of the Internet. Already a major traffic hog, Internet video will continue to dominate, accounting for 79% of global Web traffic by 2020. That's an increase of 63% from last year, according to Cisco, which just released its annual report on Internet traffic.

There's no bottomless appetite for streaming video services after all. While most of the research on the over-the-top and SVOD markets lately has pointed to robust growth, as well as a near sky's-the-limit type of potential, a new report from GfK offers a bit of counterbalance, with findings that consumers might have reached their threshold on what they'll fork over each month for entertainment on-demand.

While ad spending on digital video will continue to rise in the next few years, much of its growth will be fueled by mobile as well as by social media and on-demand viewing. ,These are among the findings in a just-released state of the industry report from video platform Ooyala.

Many factors influence the decision of when to release a new online video ad campaign and the type of media schedule to use when promoting it. A brand's goals, budget, industry, competitors, and the current state of the online video environment should all influence the strategy. Here are some tips on scheduling campaigns: