Specifications: Video input:4/8/16/32 channels(pal/ntsc) Bnc(vp-p = 1.0v,75omh) Audio input:4/8/16/32 channels(pal/ntsc) Bnc(vp-p=2.0v, snr > 83db, linear electrical level,600 omh) Preview resolution Resolution:704*576(pal),704*480(ntsc) Video compression H.264, support cbr, vbr; Frame: 100/200/400f/s(pal); 120/240/480f/s(ntsc) Output:32kbps-1000kbps H.264, support cbr, vbr Compression resolution CIF:352*288(pal),352*240(ntsc) Qcif:176*144(pal),176*120(ntsc) Qqcif:88*72(pal),88*60(ntsc) Audio compression Oggvorbis, sample ratio is 16khz, output ratio is 16kbps Working temperature -10c-- +50c Working humidity 10%--90% 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