Model DS-4008HCI Video Input 8 Channels(PAL/NTSC) BNC(Vp-p = 1.0V, 75??) Audio Input 8 Channels BNC(Vp-p=2.0V,SNR > 83DB,Linear Electrical Level ,1000??) Preview Resolution Resolution:704*576(PAL),704*480(NTSC) Video Compression H.264, Support CBR, VBR; Frame:25F/s(PAL),30F/s(NTSC) Output:32kbps-1000kbps(CIF) or 70kbps-4000kbps(4CIF) Compression Resolution 4CIF:704*576(PAL),704*480(NTSC) DCIF:528*384(PAL),528*320(NTSC) 2CIF:704*288(PAL),704*240(NTSC) CIF:352*288(PAL),352*240(NTSC) QCIF:176*144(PAL),176*120(NTSC) Audio Compression OggVorbis, Sample ratio is 16KHz, Output ratio is 16kbps Power Consumption Less than 7W Working Temperature -10degree--??50degree Working Humidity 10%--90% Dimension:185mm*107mm Computer Configuration (Recommend) Mainboard:Intel 845 or 865 Chipset Memory:256MB Display Adapter:Geforce Mx400/420/440 series or ATI Radeon 7000/7200/7500/8500/9000 series. Features & Functions : H.264(MPEG-4/Part 10) video compression standard leads to high compression ration and good video quality OggVorbis audio compression standard, with 16kHZ sampling rate and 16kbps output bitrate Real-time video and audio compression, no frame lost 4CIF preview resolution Comply with PCI 2.2 standard , a PC can support up to 64 channels Support WINDOWS 2000/XP and Linux operating system Provide full SDK , demonstration with source code Provide player SDK and network SDK for PC platform . Less than 1 second delay in LAN Stable I. B.P frame sequence Stable video quality and bitrate Stable brightness , contrast , saturation and hue of video signal Support motion detection Support OSD , LOGO and MASK overlay Support watermark technology Support double encoding