H.264 coding,Real time promotion DVR 100 fps recording for CIF, 44fps recording for ... Linux Operating System.2,system resources: 1or 4-channel CIF real-time video and 1 or 4-channel CIF playback sub-stream ... modes: Manually, timing, motion detection.6,Backup modes: USB backup, One SATA hard disk backup .7,video input: 4-channel BNC ...