Google said it has acquired Directr, a startup that developed a mobile app for small businesses to create videos, which will become part of YouTube 's advertising division.

Terms of the deal were not disclosed.

"Directr is joining the YouTube ads team, where they'll help us make it easier for advertisers to create and upload awesome videos," YouTube said in a post on Google+. "Besides making the existing Directr app free on iOS, we aren't making any immediate changes. Stay tuned for more info."

Boston-based Directr had raised about $1.7 million in funding from investors including NextView Ventures, Boston Seed Capital, Advancit Capital and Initialized Capital. The company's app "unlocks the power of video for every business with simple tools and built-in smarts," according to the Directr website.

The company was founded in 2012 by Max Goldman, previously founder of TheApptitude, and Eli Schleifer, formerly a Microsoft software-development engineer.