... channel H.264 Network CCTV DVR 2. OSD Interface 3. 4CH Audio-in,1CH Audio-out 4.PTZ Control (1). Support High-Definition ... . Video Compression FormatH. 264Video SystemNTSC / PALGUI OSDYESVideo Input(BNC)16CH BNC input(composite video signal 1Vp-p 75Ω BNC)Video ... IPS < NTSC> /176× 144 pixels with 400 IPS < PAL>Image Quality SettingSupper Best, Well, Good, Medium, Normal and BadHard Disk StorageSupport ...