Online video ad spend is forecasted to reach a staggering $4.14 billion in 2013, according to eMarketer.

The double-digit growth of videos advertising reflects the rise of mobile usage and a more connected society online. Brands are recognizing that customers are spending more time browsing the web -- and where the eyeballs go, the ads go. 75% of U.S. senior executives plan to shift their budget from television to digital video ads. One reason for this is that interactive video ads help drive online ad awareness, purchase intent, and brand favorability for brands.

Let's delve deeper into video advertising stats and how-tos with these five infographics.

Infographic 1 - ShareThrough

Infographic 2 - VideoExplainers

Infographic 3 - Samba Tech

Infographic 4 - Buy Sell Ads

Infographic 5 JLB Media