Features Comply with PCI 2.2 standard , a PC can support up to 24-ports. H.264 video compression algorithm. G723.1 audio compression algorithm. Support motion detection. Support mask function to mask sensitive area. Support view tampering alarm function for spiteful camera block. Support video signal loss alarm function. Support position configurable OSD&LOGO. Support dynamic picture catch, storage with BMP/JPEG format. Support Internet Explore for network preview. Provide full SDK , demonstration with source code.