cctv DVR card H.264 video codec, 4ch video, 1ch audio, 9 ADCs super high quality, H.264 optimized, TCP/UDP spport,IE ... PHILIPS SAA7130chipset, this DVR card provide the hi-performance digital video recording. And give you higher picture quality.and much more ... 480, 352 X 288, 320 X 240Compression ratio: 8-150M/H/CNetwork protocol: TCP/ UDPOperating System: Windows2000 / XPBase functions4 channel ...