( CNN ) -- In a shaky videotape released Tuesday , the couple who kidnapped Jaycee Lee Dugard can be heard discussing how to operate their new camera as they zoom in to capture images of children in a playground . In another , taken some years later , Phillip Garrido accompanies a parole agent who is searching their home as his wife , Nancy Garrido , films the search , mere yards from the outbuildings where Dugard is hidden . The videotapes were released Tuesday by the El Dorado County , California , district attorney 's office in response to media inquiries under open-records laws , and `` to highlight the gravity and severity of the mistakes made '' by law enforcement in the 18 years the Garridos held Dugard captive , during which time she gave birth to two children by Phillip Garrido . Dugard and her children do not appear in the videos released Tuesday . Dugard was just 11 years old when she was abducted in 1991 from the street in front of her South Lake Tahoe , California , home by Phillip Garrido , a convicted sex offender who had served 11 years for rape . Despite the fact that as a parolee he was regularly visited by police , he and his wife held Dugard and her daughters in a hidden compound of sheds and tarpaulins until 2009 . Last month , a judge sentenced Phillip Garrido , 60 , to 431 years in prison after he pleaded guilty to one count of kidnapping and 12 counts of sexual assault . Nancy Garrido , 55 , got 36 years to life in prison for her role in the crimes , including kidnapping and one count of rape by force . The couple had pleaded guilty in late April in El Dorado Superior Court . A statement from Dugard , read by her mother at the sentencing hearing , called the Garridos `` evil '' and described her kidnapping by them as a `` sexual perversion . '' In a statement accompanying the release of the videos , the DA 's office said it had decided to reveal `` certain details of this horrific case '' at the request of Dugard 's family `` in hopes of improving the supervision and detection of sexual predators . '' In one of the three videotapes , taken sometime between 1989 and 1993 , the Garridos can be heard talking in low tones about how the autofocus and other features of the camera work . Meanwhile , the jostled camera catches fleeting images of children playing in a playground some yards away -- then settles on a small girl playing in the sand as older girls gambol on a tire swing . Then , Phillip Garrido stands against a tree , and begins playing the guitar and singing while the camera pans to either side , pushing his face to the margins and centering on the children in the background . `` You got me real good ? '' he asks at one point while barely on camera . `` Yeah , '' she responds , `` I can see you really good . '' Another brief and inept video , apparently taken from a car in which the Garridos are sitting , shows a girl getting onto a bicycle and people in a parking lot . The camera zooms in on the legs . Nancy Garrido appears onscreen briefly , affecting a grin . The third clip , taken between 2000 and 2007 , was taken by Nancy Garrido during a parole agent 's search of their home in Antioch , California . As the agent goes from room to room , Phillip Garrido has little to say to his queries . But Nancy Garrido does , and raises some non sequiturs of her own . `` What does a parole agent do for his parolees ? '' she asks at one point . `` Ma'am , you can come to the office and we 'll discuss that at an appropriate time , '' the parole agent responds . `` Right now I 'm doing a search , and I 'd really -- uh , if you 'll stay in this front room , then I do n't have to place you in restraints . '' The agent 's face is blurred in the video clip , and a portion where his name is mentioned is edited out . The images of children 's faces also are blurred . CNN 's Cameron Tankersley contributed to this report .
Videotapes taken by Phillip and Nancy Garrido were released by prosecutors Tuesday . DA 's office : Release is part of an effort to improve `` detection of sexual predators '' One clip shows children in playground as Phillip Garrido plays a guitar and sings . In another , a parole agent searches house , some years before Dugard was found .