To provide a recording and reproducing apparatus capable of storing AV data reliably during recording and capable of reading the AV data reliably during reproducing even when the communication state between the video camera and a network is bad, the recording and reproducing apparatus neither failing to record nor reproduce AV data, the recording and reproducing apparatus improving the recording reliability and reproduction reliability of AV data. With a unit for determining whether the communication state is good or bad, the recording and reproducing reliability is improved by carrying out recording and reproducing of AV data to a hard disk of the recording and reproducing apparatus by utilizing a built-in hard disk when the communication state is bad.