The DirecTV Group agreed to sell television programming through AT&T as part of discounted packages of services that include Internet access and phone calling, the companies said.

Liberty’s 50 percent stake in DirecTV will account for more than 80 percent of the value of a new company that will also include other Liberty assets.

Eddy W. Hartenstein, a former head of DirecTV, will become publisher of The Los Angeles Times, the newspaper reported.

Liberty Media’s first-quarter revenue rose in all three of its business units, which include QVC and Starz television channels and a stake in DirecTV, the company said.