... input, 1-channel CVBS video output; 1.0Vp-p, 75ΩDual streamSupportOSDTime & date, vehicle ID, GPS etcCompression H. 264. Hisilicon ... 3500g RecordingChannel1-4 channel optionalSystemResolutionCIF, HD1, D1, max. 2CH of D1 & 2CH of CIFfps: 1 to 25f/s/ch adjustable (PAL) or ... cardPlayback1 to 4 channels playback Forward and backward at the speed of x 2, x4, x8, x16 GUIGraphical User InterfaceSetup system ...