SAN FRANCISCO -- San Francisco supervisors voted Wednesday to approve an ordinance that would broaden the city's recording of public meetings in City Hall, overturning a veto by Mayor Gavin Newsom, who had cited budget concerns.

The ordinance will expand the city's current audio and video recording of meetings of the Board of Supervisors, as well as of various council, commission and authority meetings, to include all noticed public meetings held in City Hall hearing and conference rooms equipped for recording.

"I believe that the wisdom of this measure, I think, speaks for itself," Supervisor Ross Mirkarimi, who introduced the legislation, said Wednesday.

The recordings would also be archived on the city's Web site, a practice that is already maintained for the currently recorded meetings.

Newsom vetoed the ordinance on May 2, noting his support of open government, but adding that he felt he could not justify additional expenditures under the legislation when he has ordered other departments to make cuts because of the city's substantial budget deficit.

The city's budget deficit has recently been estimated to be in excess of $300 million, while the San Francisco Department of Telecommunication and Information Services has estimated costs for the recording program would total about $76,000 per year, plus about $55,000 in one-time equipment purchases.

The Board of Supervisors overrode the veto by an 8-3 vote, with supervisors Michela Alioto-Pier, Carmen Chu and Sean Elsbernd dissenting.