In the first of a three-part series on digital video and TV, analyst Paul Verna breaks down the data on ad spending and subscription fees. When will digital video ad spend catch up with TV ad spend? How much subscription income is flowing into services like Netflix and Hulu?

This third annual StatPack compiles key metrics around digital video, television and the relationship between them.

Our updated US ad spending forecast shows digital ad spending outpacing expectations. Digital media will capture $111.14 billion in ad dollars in 2018 and surpass traditional media ad spending by 2019, according to our latest estimates.

US subscription-based video providers are growing their user bases and revenues as audiences move from traditional pay TV toward digital services they consider more affordable and flexible.