At the NAB Show, Adobe Systems (NASDAQ:ADBE) released its "Digital Index" report, which indicates that in 2012, TV Everywhere adoption increased 12-fold; mobile video viewing grew by 300%; Facebook users are seeing twice the level of engagement with video over non-video content; and pre-roll ads now account for 82% of all video ad impressions in long-format content.The analysis was based on close to 20 billion video starts, 10 billion ads served by Adobe media customers and the analysis of more than 450 million Facebook posts in 2012.