This application is directed to a camera system having one or more processors, memory having a limited capacity, a camera element and a microphone. The camera system captures video and audio data in real-time via the camera element and the microphone, respectively. While capturing the video and audio data in real-time, the captured video and audio data are stored in the memory having the limited capacity, and sent to a remote server system via the communication interface for storage by the remote server system. The camera system determines that a portion of the video and audio data was not available at the remote server system. In accordance with a determination that at least some of the portion is still available in the memory having the limited capacity, the camera system resends the at least some of the portion from the memory to the remote server system via the communication interface.