INTERACTIVE TV NEWS ROUNDUP, MAY 8, 2014

►Discovery Communications and Liberty Global said they are teaming up to buy London-based All3Media. More

►AT&T and BabyFirst launched an interactive application for U-verse TV subscribers that lets kids and parents create images on an iPhone or iPad, and see their designs appear on TVs connected to a U-verse set-top. More 

►Comcast said subscribers with its X1 DVR in Delaware, Maryland, Virginia and Washington, D.C., can now download programs to mobile devices for offline viewing. More   

Comcast subsidiary thePlatform named company veterans Marty Roberts and Jamie Miller co-CEOs. They succeed co-founder Ian Blaine, who will become strategic advisor on June 20. More

About 22 percent of U.S. adult viewers watch original digital video each month, up 15 percent compared to last year, according to the Interactive Advertising Bureau's "2014 Original Digital Video Study." More

►Twitter plans to launch a service in Brazil that will allow TV stations and ad agencies to measure how Twitter users respond to programming. The company is teaming up with Ibope Media on the service. More