Ad buyers are already investing more in the mobile video format, according to the “Crossing the Programmatic Buyer-Seller Divide” survey done by AOL Platforms. The study showed 20% of ad buyers increased their expenditure on mobile video advertising this year. This represents a jump, compared to the previous AOL’s report, which found mobile video spending had increased 18% since 2014. Due to the purpose of this study AOL conducted 31 of the company’s publisher clients and 18 partners who use demand-side platforms. The survey found the most common ad viewability rate was an average of 65-74%, stated the media brand’s ad buyers and publishing partners. The prediction is that mobile video advertising spend will reach the figure of $159 worldwide by 2018.