A network video recorder (NVR) is a software program that records video in a digital format into a disk drive, SD memory card or any other mass storage device. As we know that NVR contains not any dedicated video capture hardware. However, the software in this type of recorder is typically run on a dedicated device which is usually embedded with an operating system. An alternative to help basic support to increase the functionality and serviceability, we normally used standard Linux and Windows operating systems with standard Intel processors and software like video management. An NVR is typically deployed in an IP video surveillance system and hence network video recorders are distinct from digital video recorders (DVR) as the input in NVR is from a network rather than a direct connection to a video capture card or tuner. When we play a video on a DVR, then it is encoded and processed at the DVR, but on the other hand NVR is encoded and processed in the camera, then streamed to the NVR for storage and remote viewing. Hybrid NVR/DVR security systems exist for incorporating the functions of both NVR and DVR; these are also considered a form of NVR. These NVR home security systems are wireless but there are also wired systems in the market. But wireless security systems tend to be easy to set up, can be accessed through a web browser and allow the user to be notified by email if an alarm is triggered.