As an indication of the growing value of mobile video advertising, New York-based Tremor Media, the big online video ad networks has will San Francisco-based Transpara, a leading mobile ad network, according to a report in TechCrunch.

Terms have not been disclosed.

For an overview on Transpara, we spoke with founder Frank Barbieri 18 months ago.  We have republished this video today.

In November, Tremor acquired competitor ScanScout.

Andy Plesser