Patent ID: 8781289
Filing Date: 2014-07-15
Classification: H04N

Abstract:
1. A video recording system comprising: a first Network Video Recorder (NVR) configured to receive a video stream and record the video stream to a first long-term storage, wherein the first NVR is assigned the role of master NVR, further wherein more than one NVR requested to be master, and each was assigned an identification number to determine which NVR would become master, wherein the first NVR periodically sends a message to a second NVR, and the absence of a message triggers the second NVR to assume responsibility for triggering; and the second NVR configured to receive the video stream and temporarily stores an amount of the video stream in temporary storage, wherein the amount of the video stream stored in the temporary storage at any time corresponds to a duration of time sufficient to accommodate a failover of the first NVR to the second NVR; in response to a detection of a failure of the first NVR, the second NVR configured to record the video stream to the second long-term storage and transfer at least a portion of the video stream stored in the temporary storage corresponding to the amount of time between detection of the failure and when the second NVR began recording the video stream to the second long-term storage.