Features & Functions： Implement the latest and advanced H.264 video compression and G.726 audio compression algorithms Video and audio synchronized, clear sound without any noise Real-time D1 resolution preview, no frame loss Support online switching one channel in the 4-ch card and two channels in the 8-ch card to D1 size Flexible video quality and bit rate tradeoff setting Support IP remote surveillance motion detection recording and video loss alarm, etc. All inputs are connected via an external cable; no additional audio cable or connection is needed Video Video compression standard：H.264 Frame Rate: 1-25 f/s (PAL) or 1-30 f/s (NTSC) per channel Resolution: PAL: QCIF (176χ144), CIF (352χ288), HALF D1 (352χ576), D1 (704χ576) NTSC: QCIF (176χ120), CIF (352χ240), HALF D1 (352χ480), D1 (704χ480) Input: 8 inputs for 8-ch card Output: Support online adjusting bit rate according to bandwidth, from 20Kbps to 3Mbps per channel Audio Audio compression standard: G.726 Input: 8 inputs for 8-ch card Slot Type Standard PCI slot, compatible with popular main boards and VGA cards Power Power consumption:≤3W