What's behind the success and popularity of the Vine app? — Feb 20, 2013 by Take Two Show published on 2013-02-20T19:41:13Z The new Vine app is seen on an iPhone. Credit: Michelle Lanz/KPCC Meet Vine. The mobile app is a cross between YouTube and Instagram and it lets users create and post six second video clips. Vine debuted less than a month ago but it's already being used for commercials and movie releases. It's even suffered from a porn scandal. Here with more on Vine is Angela Watercutter, who covers pop culture for Wired.