Senin, 03 Maret 2014

Interested in purchasing a dvr security system.?




missmiami


Not sure how the dvr works but need to know how much space it should have and how it works with the camera's. also, if i can view the video on the tv each day and delete video so that it doesn't waste space.


Answer
There are hundreds of different types of digital video recorders (DVR's) out there so it is hard to answer your question very specifically.

DVRs take the video signal from cameras and record them on a hard disk drive just like your computer uses. Some DVRs are stand-alone "boxes", others consist of a plug-in board and software that allows any standard computer to work as a DVR.

DVRs generally come in models that will handle 4, 8, or 16 cameras. The amount of time that you can store images from the cameras depends on several factors, including size of the DVRs hard disk, the resolution and frame rates that you are recording at, and the amount of movement that takes place in front of each of your cameras.

Figuring out exactly how much time you can record on your DVR can be calculated fairly precisely, but it is too complicated to explain in this forum. However, it is fairly safe to say that any DVR that you purchase will probably hold several days or even weeks worth of recordings before it begins to run out of space.

Yes, you can view images and then delete them when you are through to save space. In addition, most DVRs will automatically record over the old images when the disk gets full, so you always have the latest images available.

You may want to look at the Super Circuits web site: http://www.supercircuits.com

They are a major online seller of security camera equipment and should have a good selection of DVRs for you to look at.

Silva Consultants

Help on setting up a security camera system? Remote Viewing.?




JimPoolBoy


I am setting up a security system for my business. I have 4 cameras and a 4 channel dvr. I have hooked everything up and I can view it with a program called "Video Viewer" by inputting my IP address and port # while on my network. I am trying to view it from a remote network but I do not have a static IP. I setup a Dynamic DNS account for free by going to http://dyn.com/dns/dyndns-free/. After I created a domain for my IP I plugged it into "Video Viewer" as my IP and added my port # and it cannot find it for me. What could be wrong?


Answer
make sure that
(a) the router or switch on your network with the cameras and DVR uses port forwarding.
You might not be able to directly address the correct port from outside (ISP peculiarity, security, nonsense, other reasons)
So take a common port, like 8080 and redirect that to the port you need.
Internally you still use the "normal" port.. outside, you need to find a port that will pass, and use your router to bounce that 'easy' port => "real, internal" port.

(b) clear your cache each time you finish, or when you start. Your browser or local DNS server may "remember" the last time you accessed DYNDNS - so they skip a lookup. Make the system lookup the address each time. You might want to make DYNDNS one of your DNS setup.

( Pro/con: if you use DYNDNS to lookup websites, you will always get a good, current result for your personal server. However, it can slow down all your other lookups.)

(c) double-check your ISP rules. They may block nearly everything incoming unless you have a "business" or "enterprise" level account. Of course, it costs more.. but you have more freedom to set your own servers.




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