Kako odabrati snimač za video nadzor?
DVR, NVR, AHD, IP … Frames, megapixels ..? How to choose the right recorder
for video surveillance? Hello everyone,
My name is Ana and in this video I will point out the basic characteristics of the
recorder for video surveillance and help you to choose the right one For starters we have the basic partition on network NVR (network video recorder) recorders and conditionally speaking analog DVR (digital video recorder) recorders. The main difference is that NVR recorders work with IP cameras and for data transfer they use Your network infrastructure or UTP cables and / or Wi-Fi Recorders for connecting the camera use RG59 or RG6 coaxial cables usually with BNC connectors in this case, each camera goes with a separate cable Whatever the recorder to choose DVR or NVR you can connect it to the Internet and monitor the cameras from your mobile phone, computer or tablet. DVR recorders now support several standards so here we have an analog or standard CVBS which is long outdated but it is still supported by individual systems. However if you have analog cameras You can buy the modern DVR recorder and connect them because they will still work and after some time you can changed them for better image quality. There are HikVision HDTVI then Dahuin HDCVI and AHD used by B brands. All recorders support resolutions up to 8 megapixels while some HDCVI recorders have an option to transmit both sound and image over a single cable. despite the fact that IP systems are increasingly affordable camera recorders that use coaxial cables are still cheaper. IP systems will always have a better frame rate compared to analogue systems while the image quality is approximately the same. The channel number is certainly one of the basic informations we need to pay attention to so usually we have recorders that support 4, 8 or 16 cameras. XVR recorder also supports, next to cameras that connect via coaxial connector, and several IP cameras so that this can be useful information if you want to expand the system. The following items to pay attention to are the frame rate and recording resolution. Simply put frame rate is the number of pictures per second. If the specs of one recorder states that it supports 25fps in 2 megapixel resolution it means that it records, in real time, in Full HD resolution. In terms of security, a smaller number of fps is often sufficient so it’s okay to have 12 or 6 frames per second. The picture will not be completely smooth but will serve the purpose of identification and with a smaller hard drive you will be able to save video content for an extended period of time. Make sure that the recorder can record at the same resolution as the cameras otherwise you will risk, If you have a 5 megapixel camera, to record a 2 megapixels video or not to show camera at all. Next important thing is the codec that the recorder supports. Currently the most used is H.265 but we also have recorders that support H.264 codec. The new codec means that the same footage will occupy less space, on the hard drive, than the older version. Therefore the last essential item on our list is choosing the right hard drive. Data storage time on your recorder depends on several factors. Recorders are mostly set to activate when the device detects movement all for the purpose of saving the space on a hard drive and allow longer rewind time. Recorder automatically deletes the oldest recordings. Legal obligation to keep recordings when you have video surveillance is 30 days. And on the screen you can see the necessary size of the hard disk for 4 cameras and 25 frames per second in several different resolutions and codecs. Another thing that can affect your choice is the ability to power the camera via a single cable. There are IP cameras which are powered via LAN cable or Power over Ethernet and instead of using a separate switch you can use an integrated PoE switch and at the same time, save time adjusting the cameras. In the case of HDTVI i HDCVI systems we use PoC (power over coax). In this case through a single coax cable You can provide image and the power at the same time. This is especially convenient if you already have a ready installation without a power cable. So, I hope that I succeeded in explaining the basic characteristis of the recorders and doing so, helped you make your choice. You can always write us via our mail: [email protected] call us on our cell phone number 062/625-444 or you can stop by our retail shops in order to offer you an adequate system tailored to your needs. Do not forget that on our web site you have a discount for purchasing sets of video surveillance as well as the opportunity to purchase our products on 12 monthly installments without interest. If you liked this video do not forget to click on the like button and to subscribe to our channel to keep up to date with the latest developments. Until next viewing. Was it all right so far? Right? Not … What, what’s wrong? Whay are you laughing …? aaaand, oooo, they work with … IP caameras … Firstly the difference is … but is still used in some systems, so if you have, however if you have an analog camera yeah you can, take a modern DVR and connect it … The analog BC … You can buy a DVR with a modern standard … … since when the DVR is a standard … … using by the B brands. So that this can be useful information if you want to … … if you want to expand the system so you risk … …stop recording me! 🙂