dvr-404ht adopt h.264 compression algorithm,high performance,good video quality audio compression:g.726,8khz sampling ratio,16kbps output bitrate v/a real time compression, no frame lost preview resolution:4 cif coding resolution:4cif+cif+cif+cif or 2cif+2cif+2cif+cif or kinds of combination coding type comply with pci 2.2 standard,a pc support 32 channels provide full sdk and demo provide player sdk and network sdk for pc platform,less than 1 second delay in lan setable i.b.p frame sequence setbale video quality and bitrate setble brightness,contrast,saturation and hue of video signal support motion detection support osd,logo and mask overlay support watermark technology support multiple encoding,including cif,2cif,and 4cif specification 1.video video input:1-4channels signal support pal,ntsc resolution:704x576(pal),704x480(ntsc),704x288(pal),704x240(ntsc),352x288(pal),352x240(ntsc) frame rate:25f/s(pal),30f/s(ntsc) output bitrate:32kbps-1000kbps(cif) 2.audio audio input:1-4channels signal input sampling ratio:8khz output bitratio:16kbps