While realtime bidding (RTB) for video inventory has taken off dramatically, there has been pushback to theses electronic marketplaces by television networks and other "premium" video publishers who prefer to control, and usally sell their inventory directly to ad agencies.

LiveRail, the San Francisco-based provider of video ad services including RTB platforms, has introduced new controls to give premium publishers a greater degree of comfort, explains CEO Mark Trefgarne in this inteview with Beet.TV

We interviewed him earlier that week at the BRX Video Summit where he was a speaker.