How to choose lens of security cameras if you want to see human faces/car plate number clearly?

• Author:Grace
• Source:www.mvteamcctv.com
• Release on :2017-07-27

Lens is the eye of security camera, it's one of the most important part of a security camera.  

Do you know how to choose lens to achieve different surveillance purpose? Such as see human face, human body contorus or human activities? If not, please refer to below table:

Resolution	Focal Length (mm)	See the details characteristics (Face/car plate)	See the physical characteristics (Body contours)	See the behavioral characteristics (Human activities)
D1	n	n/2(m)	n(m)	2*n(m)
720P	n	0.75*n(m)	1.5*n(m)	3*n(m)
1080P	n	1.5*n(m)	3*n(m)	6*n(m)
3MP	n	1.5*n(m)	3*n(m)	6*n(m)

"n" represents focal length of lens, such as 3.6mm, 6mm,12mm etc. For example, a 2MP/1080P IP camera,with 6mm lens. The calculation result as below:

* See the face/car plate clearly at 9m(1.5*6m);

* See the body contours at 18m(3*6m);

* See human  activities at 36m(6*6m).

The 9m, 18m, 36m is distance from scene to camera.

Are you clear about how to choose lens of security cameras according to  your demands now?

MVTEAM  is a manufacturer and exporter of all kinds of security cameras including AHD cameras, IP cameras,PTZ cameas, wifi smart cameras etc. If you have any inquiry about security cameras, welcome to contact us.

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What is Port Forwarding and P2P Cloud for DVR/NVR?

• Author:Grace
• Source:www.mvteamcctv.com
• Release on :2017-07-25

Port forwarding is the way your DVR/NVR to establish remote connection with the APP/CMS of your surveillance device on phone/PC. Each DVR/NVR comes with unique ports. Each port must be opened through your router. 

P2P or cloud connection is a new procedure for the surveillance devices to make connection with the camera APP/CMS on our phones/PC. Unlike the port forwarding, they do not require any ports to be opened. MVTEAM DVR/NVR come with device ID burned into the units that establishes connection to the Phone/CMS as below:

The cons and pros for port forwarding and P2P

Port forwarding does not require server running in the cloud for connection and usually connection readily available after ports are opened. The downside with port forwarding, it requires the IP address of the NVR/DVR and ports to be the same and opened correctly. If your router resets or the local IP address of your security system changed, the procedure of opening the ports must be repeated. 

When using P2P cloud, just connect DVR/NVR to internet, you can remote access DVR/NVR via device ID on phone/PC. But for good streaming speed and low latency, P2P cloud server must be localized. In addition, P2P is limited with how many users running on that cloud service and access their cameras system, putting load on the cloud server. 

Both port forwarding and P2P require good internet connection of your phone/PC. And we suggest our customers use P2P cloud for remote view as port forwarding is a little comlex and nearly no company can provide free DDNS for port  forwarding remote viewing.

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DVR/NVR Problem---Why So Hot and Noisy?

• Author:Shalyn
• Source:www.mvteamcctv.com
• Release on :2017-07-17

In a DVR or NVR system, heat and noise are the common problem for users. Technically speaking, the main criminals are usually friction and vibration caused by the constant inner workings. Here we get to know some of the element which can cause these two problems in a surveillance system, along with some remedies and precautions to help keep you from malfunction.

Temperature Consciousness
Always be conscious of your system's temperature. Both internal and external factors should be considered to evaluate heat capacity. Like an unventilated office can cause it to overheat and draw in and retain excessive dirt into the interior. Put your busy device in a place out of direct sunlight, if possible, place in an air-conditioned area. Once the overheated happens to your machine and it feels hot to touch, immediately power-down and move it to a ventilated place. 

Cleanness of DVR or NVR 
To keep internal temperatures in check is the most basic maintenance. Besides, keep your machine free of dust, dirt. Periodically, should shut down your working DVR or NVR during an off-peak time, open the chassis and carefully clean debris within the machine. To make sure they are clean.

Select the right hard Drives
Surveillance hard disk drives are different from standard computer desktop drives. It is specifically designed to use in a DVR or NVR that is on 24 hours a day, 7 days a week. And make sure you select the proper capacity drives to compatible with your DVR or NVR.  

CCTV Surveillance system is needed and helpful for you in daily life, we should take good care of it. A periodically maintenance will prolong your investment's longevity.

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Security Camera Footage---How to balance the quality and quantity?

Security Camera Footage---How to balance the quality and quantity?

• Author:Grace
• Source:www.mvteamcctv.com
• Release on :2017-07-04

Most security cameras are connected to DVRs or NVRs which have hard disks for storing security camera footage. And this is where the question of quality versus quantity will pop up. Users can have a terabyte of memory storage for the security camera footage but if several cameras work on an okay resolution–such as 1920 x 1280–at 25/30 frames per second, users have to delete recordings within one week or less. 

Since lower settings can allow to store security footage for longer time, most users would consider it overkill to run their cameras at higher resolutions and on 25/30 frames per seconds. Please don’t use the lowest possible settings, especially if you ever hope to use the security system to identify a burglar or robber. A video recorded in poor quality won’t help you or the police identify a culprit.

The purpose for setting up a security system will help users determine an appropriate balance between quality and quantity for the surveillance footage. As a closing tip, if you are going to choose for lower video quality, consider placing your cameras in places which can best capture potential culprits’ faces. Another effective way to balance the quality and quantity is setting up motion detection record, then, the security system will only record when there is movement in the monitoring area. It will save lots of memory storage. 

All MVTEAM IP cameras, NVRs and DVRs support motion detection record. If you are using MVTEAM cctv products, please check below posts to know how to setup motion detection.
*How to Set Motion Detection for Wifi IP Camera?

*How to set motion detection for MVTEAM 5-in-1 DVR?

*How to set motion detection for wireless NVR kit ?

*How to Set Motion Detection Record on AHD DVR/NVR?