Video advertising network YuMe is bringing in a Canadian to run the place: Montreal-born Michael Mathieu, a former President at Freedom Communications, showed up for work today as CEO, we hear.

Founding CEO Jayant Kadambi, who took the company through two rounds of financing and a big partnership with Microsoft, has stepped down to the President position. That Microsoft deal brings YuMe video ads to cover excess inventory across Microsoft sites.

Comscore says 134 million people view their ads monthly.