GV-650-8 Specs?

[yipster 0]

Hello,

 

Does the GV-650-8 records 60 fps NTSC per video input or it is 60 fps across 8 video inputs? Which equals to aprox. 7.5 fps per video input.

 

Thanks

[rory 0]

Good question:

http://www.remote-security.com/gv650.htm

They say 60pps but 480pps with DSP card. Whats a DSP card?

 

60pps is still 'a decent' standard in CCTV but is rising (30pps is still a norm in some stand alone DVRs especially lower end ones), though in higher end CCTV it has entered the 120pps and later will be 480pps eventually as we all here hope it will be. Most if not all Linux Stand alones are claiming 120-240pps while they are really in lower resolution at those speeds, normally they are much lower when using high resolution such as 60 or 30pps. While there are other more expensive stand alone DVRs that are doing real time but still at a high price tag, and generally on 4 channel DVRs only. That is stand alone DVRs.

 

PC Cards as far as I have been told, can do the higher resolution in faster speeds due to faster CPU speeds, and are the only ones right now that do 480pps, in other words right now only PC cards can do 480pps over 16 cameras which is real time recording. Someone else like DVR Exp will i'm sure respond to this with more info as Ive never used Geo and no high end PC DVRs.

 

So if it is indeed 60pps, then yes to your question. But dont feel bad, its still a decent recording speed, especially if you are using Motion Detection Recording.

 

Rory

[cctv_down_under 0]

I would consider 60FPS a little slow over 16 cameras, it may barely be acceptable over 8 cameras.

 

In most PC based systems the 60FPS would be divided by the number of cameras..so yes 7.5FPS Per Camera, but Geo is slightly different.. they take unused frames from cameras that are not detecting movement at some time and then pass it by preference to the ones that are detecting movement, so you can have faster than 7.5 FPS.

 

There are quite a few Standalone DVR's that do 480 FPS on recording, I know of at least three of them that are out there now, however they certainly are not cheap.

 

The DSP (Digital Signal Processing) Card, makes your display 480FPS, it also improves viewable quality by around 40%, but it does not affect the recording at all, it also provides a Multiplexed output without the GUI on another screen.

 

 

Personally I hardly ever sell a 60FPS card anymore, those speeds are usually only used on standalone devices these days, but I hear that it is not as important in some countries, but here the slowest cards sold are usually 100FPS when going for more than 8 cameras.

 

 

Hope this helps

 

GC

[knightvision 0]

Yipster,

when trying to determine what frame speed to go with, it is really important to consider what you are trying to capture with your DVR. If you are trying to watch a tractor trailer move across a parking lot, or even just monitor traffic through a store, 60FPS over 8 cameras will be sufficient. Even if you were monitoring a register, it should do the trick nicely. Keep in mind, that 7FPS means someone would have to potentially open the register, put their hand in, take what they want, and get it into their pocket without the camera seeing it, in less than 1/7th of a second. That's pretty damn fast. If you need to watch for things like slight of hand (i.e. casino), then yes, you will need a higher frame rate. Most applications can get away with 7FPS.

[rory 0]

I generally set my DVRs to 5-8pps, but if there is motion it speeds up on that camera and gets divided among cameras as they pick up motion, so if only one camera is getting motion then that one is in real time (30pps or 60pps).

 

I havent seen any embedded stand alones (non windows OS) that do 480pps yet in high resolution. If you have a link I would be interested to see it

[cctv_down_under 0]

At home at the moment, will post a link when I get to work if I rememeber, you are correct about need of frame rate but lots of robberies happen with people running, and the faster the frame rate the more frames you get so more chance of that one good shot.

 

over here you can not sell a 50FPS DVR (60FPS)..pal does less frames, I think that is the main reason standalones do not sell as much here

[rory 0]

yep, they are too use to the faster frames

 

I wouldnt mind looking at the GEO, still need to get some funds first though, and I would definately have to write my own remote software GUI I have to get the business moving here first.