HIKVISION DS-7204HVI-SV offers WD1 (960 x 576) recording at 15 fps (each channel), or recording in any lower resolution (4CIF/2CIF/CIF/QCIF). The local recording and network transmission uses H.264 compression that provides good image quality with relatively small bandwidth and disk space consumption. Thanks to the WD1 (960x576px) resolution, the DVR ensures increased image quality of the video footage from 650 TVL (700 TVL B/W) cameras (compared with D1/4CIF DVRs). It is connected with the number of effective pixels in such cameras, 976×582. Common D1(4CIF) DVRs with recording resolution of 704×576 cannot save the full detail provided by the cameras.A new menu of the DVR has been designed in a manner that helps everyone, even novice users, navigate and make changes to the settings. Both the layout of commonly used functions and graphic design meet the highest current standards. Support for Google Chrome, Opera and Safari web browsers eliminates the need for installing/using ActiveX controls. Browsing the archives locally, the user can simultaneously play them back from all 4 channels. To quickly localize the interesting moment/period, the video records are presented on timelines (24 hours). The playback can be started just by clicking on a point on a timeline. “Smart search” function allows for finding moments with movement in a defined area of an image in order to analyze vital events.HIKVISION DVRs in IP networks can be controlled via iVMS 4000 or IVMS 4200 software. The iVMS 4000 utility can remotely manage up to 50 DVRs. The user accounts can have different access/management rights, from the highest level of “administrator” to individually limited “guest” levels. Features: Key features: WD1(960×576) recording resolution Stable operation in all modes Support for IE, Google Chrome, Opera, Safari Auxiliary video streams (CIF/QCIF, for each channel) Parallel operation of HDMI, VGA and CVBS outputs HDMI/ VGA modes up to 1920 x 1080 pixels Searching recordings by alarm events Digital zooming during live monitoring and playback Synchronous playback from all 4 channels Support for IPv6 Monitoring the statuses of LAN, cameras, hard drives Compression: H.264 Watermark Ability to set recording parameters for each channel, including image resolution and quality, bit rate Audio-video synchronization Local monitoring Screen division or sequential image displaying Up to 4 privacy zones for each camera Presets and patrol paths and for PTZ cameras PTZ control via mouse by selecting some area of the image Possibility of setting a timetable for patrol paths and starting points for PTZ cameras Support for multiple PTZ protocols: Pelco-p, Pelco-d WX, Pelco-D, Samsung, TLPelco-p, BBV, KC3360S, ACES, ALSON, Tc Pelco P, Tc Pelco D, ANTEN, ADR8060, LC-D2104, A01, LG, 1602-Protocol, 3609hd, AB-D, AB-P, ADV, BEWATOR-PELCO-D, Dragon, DSCP, HIKVISION, HY, Honeywell, Intergative P, LiLin, Manowang, Nitro, Philips-3, PIH-1016, PLD, RedApple, SHINEI, SONY-EVI, SPD, Siemens and other Detection of video loss, motion detection in predefined areas of images Quick playback option Disk management Place for one SATA HDD up to 4 TB Support for up to 8 NAS drives (8 x NAS or 7x NAS +1x IP SAN) S.M.A.R.T. hard disk monitoring Option of overwriting existing data Recording and playback Multiple recording modes, including manual, scheduled or triggered by motion detection 8 periods of scheduled recording, individually configurable for each camera Pre and post alarm options Searching by motion detection in selected areas images – “Smart search”, Searching options include selection of date and time, channel, kind of recording (event) Ability to set different recording parameters for alarm events Timelines Local playback of all channels simultaneously Markings for quick searching of selected recordings Digital zoom during live monitoring and playback Defining image parameters for specific events Reverse playback Alarms Exceptions include: disk overflow, disk failure, network failure, video loss, video incompatibility, IP conflict Alarm response actions include: displaying full screen image from the active channel, beep, email notification Possibility of scheduling alarm activation periods Network operation Built-in 10/100Mbps Fast Ethernet card Support for IE, Google Chrome, Opera, Safari Support for TCP/IP, PPPoE, DHCP, DNS, DDNS, NTP protocols Possibility of remote control, downloading of recordings via the network, remote search/playback/archiving Remote configuration of parameters Remote import/export of settings Remote monitoring of the device status, alarms, log Possibility of remote disk management, remote firmware update, remote operation control Remote recording control (switching on/off) Screenshot recording option Other features Control via USB, IR remote, front panel buttons, dedicated keypad Ability to create user accounts with different access/management rights System log recording all events; easy way to find events according to main categories: alarms, exceptions, operations etc. Starting and stopping alarms manually or automatically Ability to save and import/export DVR settings Specifications: Video/Audio Input Video Compression:  H.264 Video Input:  4-ch Video Input Interface:  BNC (1.0 Vp-p, 75 Ω), PAL / NTSC self-adaptive Audio Compression:  G.711u Audio Input:  1-ch RCA (2.0 Vp-p, 1 kΩ) Audio Input Interface:  RCA (2.0 Vp-p, 1 kΩ) Video/Audio Output VGA Output:  1-ch, resolution:1920×1080P/60Hz,1600×1200/60Hz,1280×1024/60Hz,1280×720/60Hz, 1024×768/60Hz CVBS Output:  1-ch, BNC (1.0 Vp-p, 75 Ω),resolution: PAL: 704 × 576, NTSC: 704 × 480 HDMI Output:  1-ch, resolution:1920 × 1080P / 60 Hz ,1600 × 1200 / 60 Hz,1280 × 1024 / 60 Hz, 1280 × 720 / 60 Hz, 1024 × 768 / 60 Hz Recording resolution:  4CIF/2CIF/CIF/QCIF Frame Rate:  Mode1:4CIF / 2CIF @ 12 fps orCIF / QCIF @ 25 fps (P) / 30 fps (N)Mode2:Channel 1: 4CIF / 2CIF / CIF / QCIF @ 25 fps (P) / 30 fps (N),Channel 2~4: CIF / QCIF @ 25 fps (P) / 30 fps (N) Video Bit Rate:  32Kbps~2048Kbps, or user-defined (Max.3Mbps) Stream Type:  Video/Video&Audio Two-way Audio:  1-ch, RCA (2.0 Vp-p, 1 kΩ) (using the audio input) Audio Output:  1-ch RCA(Linear, 1kΩ) Audio Bit Rate:  64kbps Dual Stream:  Support Synchronous Playback:  4-ch Hard Disk Driver Interface Type:  1 SATA Interface Capacity:  Up to 4TB capacity for each disk External Interface Network Interface:  1 RJ45 10M/100M adaptive Ethernet Interface USB Interface:  2 USB 2.0 Interfaces Serial Interface:  1 RS-485 interface, half-duplex General Power Supply:  12 VDC Consumption:  ≤ 10 W Working Temperature:  -10 oC ~+55 oC Working Humidity:  10% ~ 90% Chassis:  Standalone 1U chassis Dimensions:  315 × 230 × 45 mm (W × D × H) Weight:  ≤ 2 kg (without hard disk or DVD-R/W)