A DVR also offers control over quality and frame rate or overwrite security footage that is deemed no longer crucial, allowing disk space use to be maximized. In some DVR security systems, remote control and access to security footage is possible by connecting the DVR to either the internet or a LAN network. Some of the latest security digital video recorders include video analytics software and firmware, enabling functionality such as following suspects or objects throughout your surveillance system to the detection of abandoned objects. Security DVRs may be categorized as being either PC based or embedded. A PC based DVR's architecture consists of a PC with operating system and a video capture card designed to capture video. An embedded DVR is designed as a single unit with its operating system and software contained in the firmware or read only memory.
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