Hengtong HTEDVS/R Stand-alone Digital Video Recorder is completely independent of PC+ Windows, and is built upon the embedded processor and real time operating system, no PC processor and operating system, not having to think about the compatibility of the main board. EDVR introduces the advanced MPEG4/H.264 digital video compression technology and integrates the hard disk auto recording, real time listening, PTZ control, arm/disarm/alarm control, motion detection with network transmission, having the complete real time record, rational data transmission stream and strong linkage alarm function.