A data streaming method is performed at a computing device having one or more processors and memory. The memory stores one or more programs configured for execution by the one or more processors. The process records video from a camera in real-time. The recorded video is stored in the memory in a circular buffer in chronological order. The process sends data in chronological order from the circular buffer to a destination in real-time. In response to detecting that a portion of content from the circular buffer needs to be resent, the process concurrently resends to the destination in reverse chronological order data from the portion of content from the circular buffer.