AT&T Inc Chief Executive Randall Stephenson on Tuesday hinted at launching a mobile video streaming service next January. "It is something we are pursuing very, very aggressively and you should assume that we will be doing something in the market with that," he said at the UBS Global Media and Communications Conference in New York.

The company plans to offer a streaming videos that can be viewed on a smaller screen, or to a single screen in a home that's not set-top box-driven, Stephenson added.

The online video market is a competitive space with established players such as Netflix and Dish Network and new entrants like Verizon Communications rushing to service viewers who consume video on mobile devices.

With the $48.5 billion purchase of satellite TV operator DirecTV in July,

AT&T is already the No. 1 U.S. pay-TV company with over 26 million U.S. subscribers, following the recent acqusition of satellite TV operator DirecTV.