While online video advertising is expected to jump 54 percent this year, faster than any form of media, according to eMarketer, the industry faces multiple challenges around the emerging medium says David Hallerman, Principal Analyst at eMarketer in this interview with Beet.TV

He sizes up the state of the industry as a parodox where viewers are consuming more videos on more devices, "converging" around the new medium while at the same time the media is fragmenting around multiple devices.

We spoke with Hallerman at the IAB Digital Video summit last week in New York.