Google Inc.’s YouTube hopes recognition technology will be in place in September to stop the posting of copyrighted videos on the popular Web site, a lawyer Friday told a judge presiding over copyright lawsuits.

The lawyer, Philip S. Beck, told U.S. District Judge Louis L. Stanton in Manhattan that YouTube was working “very intensely and cooperating” with major content providers on a video recognition technology as sophisticated as fingerprint technology the FBI uses.

He said the company planned to have the technology in place in the fall, “hopefully in September.”