CAL. GOV. CODE § 54953.5 : California Code - Section 54953.5

(a) Any person attending an open and public meeting of a legislative body of a local agency shall have the right to record the proceedings with an audio or video recorder or a still or motion picture camera in the absence of a reasonable finding by the legislative body of the local agency that the recording cannot continue without noise, illumination, or obstruction of view that constitutes, or would constitute, a persistent disruption of the proceedings.

(b) Any audio or video recording of an open and public meeting made for whatever purpose by or at the direction of the local agency shall be subject to inspection pursuant to the California Public Records Act (Chapter 3.5 (commencing with Section 6250) of Division 7 of Title 1), but, notwithstanding Section 34090, may be erased or destroyed 30 days after the recording. Any inspection of an audio or video recording shall be provided without charge on equipment made available by the local agency.