1.Video compression standard:H.264 2.Audio compression standard:ADPCM 3.Audio compression rate:32kbps Features 1.Second-generation video compression of H.264(Main Profile)2.Six workers at the same time support the operation of recording, playback, network transmission, backup, mobile control and interface operation3.Two USB ports, two are high-speed USB2.0 interface, you can mix backup and mouse4 ...