DVR和NVR之间的区别

1.数字录像机(DVR)：
数字视频录像机(DVR)主要用于记录来自模拟摄像机或基于同轴电缆的摄像机的数据。它与最大分辨率为2MP的基于模拟同轴电缆的摄像机配对。在此系统中，需要电源线和音频/视频线。它使用同轴电缆提供有限范围的服务。在这种情况下，信号的稳定性与互联网的运作无关。

DVR系统的优点–

• 与NVR相比更便宜
• 提供高清图像质量
• 易于操作

DVR系统的缺点–

• 需要单独的电源
• 一般质量较低的视频
• 覆盖范围较小
• 无法录制音频
• 复杂的安装过程

2.网络录像机(NVR)：
网络视频录像机(NVR)主要用于通过网络无线记录IP摄像机的数据。它与IP摄像机配对，分辨率范围从2MP到12MP或更高。在该系统中，无线或单条以太网电缆用于电源和数据。它提供可以访问网络的远程服务。在这种情况下，信号的稳定性取决于互联网的正常运行。

NVR系统的优点–

• 可以同时录制视频和音频
• 提供更好的图像质量
• 提供更大的系统灵活性
• 提供覆盖范围
• 可以有线或无线
• 需要一根电缆来连接电源和视频

NVR系统的缺点–

• 更贵
• 软件可能难以使用
• 需要网络知识才能进行操作和故障排除

DVR和NVR之间的区别：

S.No.	DVR	NVR
01.	DVR stands for Digital Video Recorder.	NVR stands for Network Video Recorder.
02.	It is mainly used for recording data from analog cameras or coaxial based cameras.	It is mainly used for recording data from IP cameras wirelessly over a network.
03.	DVR is paired with analog coax based cameras with resolution  2MP maximum.	NVR is paired with IP cameras with resolution ranging from 2MP to 12MP or higher.
04.	DVR uses Coax cables as transmission cable.	NVR uses Ethernet cables as transmission cable.
05.	It has lower recording quality than Network Video Recorder.	It has higher recording quality than Digital Video Recorder.
06.	DVR system setup is tougher as compared to NVR.	NVR system setup is easier as compared to DVR.
07.	DVR camera cost is lower.	NVR camera cost is higher.
08.	Signal stability is independent upon the internet working.	Signal stability depends upon the internet working.
09.	DVR needs lower operating cost than NVR.	NVR needs higher operating cost than DVR.
10.	In DVR system both power cable and audio/video cable needed.	In NVR system wireless or single Ethernet cable is used for power & data.
11.	It can not be placed anywhere as it is limited by the coax cable.	It can be placed anywhere with a network access.