Standard: H.264Video Chip: DSP ProcessorMain CPU: Embedded MPU ProcessorOperation System: RTOS Embedded SystemTypical System: Non-Audio Surveillance Video Fields2)Technology Parameter:Real-time Surveillance Resolution:PAL:704*576(D1)NTSC:704*480(D1)Play Resolution:PAL:176*144(QCIF),352*288(CIF)NTSC:176*120(QCIF),352*240(CIF)Video Input:4/9/16 Routes (NTSC,PAL),BNCVideo Output(Main Port):1 route(NTSC,PAL),BNCVideo Output (Ring Circulation):4/9/16 Routes,BNCVideo Frame Frequency :PAL:1/16~25 frame/second ,changefully;NTSC: 1/16~30 frame/second ,changefully.Code Type: Video StreamVideo Compression Output:32K~2M changefully, or user-defined(bps)Communication Port: 1 pc 10M/100M for Ethernet,1 for RS232,1 for RS485.Keyboard Port:1 :1 Rank port 1 VGAHD IDE Port: Support 8 IDE Disks, of Volume 2000GB for each oneUSB Port:1 U-Disk, USB HD,USB Recorder.Alarm Input/Output:4 Input/2 Output;16 Input/4 Output.