Standard mpeg-4 video compression format. Encoding bandwidth of 64 k to 4096 kbps is supported. Standard mp3 audio compression format. 44.1 khz sampling and 16 k to 64 kbps encoding are supported. D1 (704íß576) and cif (352íß288) formats are supported. Built-in web server. Ie browser configuration and upgrading are supported. Easy to operate. Dynamic bit rate control, ensuring the real-time audio transmission on the internet. Two-way speaking function. User management supports three-level password. Camera remote monitoring function is supported Caption addition is supported. 2 kg