What to look for in DVR?

[Jcal 0]

New to this area. Did some searching through the threads. Kind of a crash course. Can some one highlight the main features to look for in DVR.

Going to need a stand alone 8 channel, internet capable DVR, excellent display and recording rate. Also, one that has great live video support over onternet . Priced around 600-1k. What is the best selling brand at the moment? at that price range? Thanks in advance for your inputs.

 

Jon

[Jcal 0]

G4-4RTA 4

 

Seems solid from what I've read.

But only 4 channel.

 

Physical description

 

Max 16 video in (PAL, NTSC)

Max 16 audio in (linear in)

1 video out (PAL, NTSC)

1 audio out

1 line in (for voice talk)

1 10/100M Ethernet

8 IDE or 4 IDE and CD-RW

8 or 16 alarm in

4 alarm out

1 RS-485 for keyboard, 1 RS-485 for PTZ control

1 RS-232

1 USB

1 VGA

Built-in CDRW

19-inch case (450mm*450mm*95mm)

Functions :

 

3rd generation digital surveillance technology utilizing an embedded OS and embedded MCU to bring together the most powerful network-based DVR.

 

Compression function:

Support maximum 16 channels video in. Each channel can be compressed independently in 25F/S (PAL) or 30F/S (NTSC), using H.264 algorithm.

Both variable bit-rate and variable frame rate are supported.

Support max 16 channels audio in. Each channel can be compressed independently, using an OggVorbis audio standard. The output bit-rate is 16 kbps.

The output video and audio streams are integrated to generate the synchronized H.264 stream. Video and audio coincide with each other from beginning to end when the stream is played back.

Support 2-channel synchronous playback

Supports following resolution:

NTSC: DCIF(528x320), 2CIF(704x240),CIF(352x240), QCIF(176x120)

PAL: DCIF(528x384), 2CIF(704x288),CIF(352x288), QCIF(176x144)

Supports multi-zone motion detection.

Supports position configurable OSD & LOGO.

Supports watermark.

Network Functions:

Supports TCP/IP (ARP, RARP, IP, ODP, TCP, PPP, PPPoE, DHCP, SNMP, FTP, etc).

Supports broad-band transmission (ADSL, etc).

Supports narrow-band transmission (PSTN, etc).

Streams of one or more channels, Net DVR's running state and alarm state can be accessed through network.

Net DVR's parameters can be set through the network.

Supports remote control of PTZ.

Streams can be recorded in a remote host PC .

Files in Net DVR can be downloaded to or remotely played in a remote host PC.

Supports Net DVR remote upgrading.

PC hosts can gain direct control of Net DVR's RS-232 or RS-485 port.

Supports voice talk between host in surveillance center (back end) and Net DVR (front end)

Supports embedded web server. Browser can be used to access Net DVR.

Storage Functions:

Supports 6 kinds of record trigger mode: Schedule mode, alarm mode, motion detection, motion detection & alarm, motion detection | alarm.

 

Won't lose frames when switch record files

Can install 8 HDD and each HDD supports 2000GBytes

Supports hard disk sleep mode.

Supports FAT32 file system.

Supports HDD smart

Supports cyclic and non-cyclic record mode.

Supports network access storage (NAS).

Supports USB flash disk, USB hard disk, USB CDRW for backup.

Preview & Playback Functions:

Supports Monitor;

Supports VGA;

Switch quickly in preview mode;

Supports partial zone sheltering;

Supports local file Play and time play, support play fast, play slow, pause, play frame one by one, etc;

Supports OSD, LOGO

PTZ control:

Supports Pan-Tilt-Zoom control and Preset through front, keyboard and network;

Supports most popular PTZ protocol;

Ability to customize new PTZ protocol;

Alarm Functions

Supports Motion detect alarm, switch alarm, signal lost alarm, exception alarm, etc;

Supports setup of alarm related with PTZ preset;

Others:

Support RS-485 interface keyboard;

User-friendly menu interface;

Multi-level user priority;

SDK and DEMO software source code can be provided to reduce application development time.

 

Specifications

Video Compression H.264

Preview Resolution NTSC: 704*480(4CIF)

Compression Resolution NTSC: 528*320(DCIF)

NTSC: 704*240(2CIF)

NTSC: 352*240(CIF)

NTSC: 176*120(QCIF)

Video Input 4/8/16 channels BNC (1.0Vp-p, 75Ω)

Video Output 1 channel BNC (1.0Vp-p, 75Ω))

Frame Rate NTSC: 1/16—30 FPS

Stream Type Video stream or Video&Audio stream

Bit Rate 32kbps ~ 2Mbps (User-defined

Audio Input 4/8/12/16 channels BNC (2.0Vp-p, 1KΩ)

Audio Output 1 channel BNC (liner output, 600Ω)

Audio Compression OggVorbis, 16kbps

Voice Interface 1 BNC (Liner in, 1KΩ)

Communication Interface 1 RJ45 10M/100M UTP network port

1 RJ45 RS-232 port

1 RJ45 RS-485 port

Keyboard Interface RJ-45 Port

RS-485 Interface RJ-45 Port

 

HDD IDE Interface 4 IDE, support 8 HDD and each HDD can support 2000GB.

Or 4 HDD + IDE CD-R/W.

USB Interface 1 USB, support USB1.1; Support USB flash disk, USB HDD, USB CD-R/W

VGA Interface 1, Support 800×600/60Hz, 800×600/75Hz, 1024×768/60Hz

External Alarm Input 8 Channel : 8 input

16 Channel: 16 input

Relay Output 4 output

Power Supply 90--135VAC or 180--265VAC, 47--63 Hz

Power Consumption 22W ~42W (without HDD)

Working Temperature -10°C - 55°C

Working Humidity 10%--90%

Size 19 inch standard (450mm*450mm*95mm)

Weight 7.6Kg (without HDD)