CALCULATOR


此计算器产生的数值仅供参考。值是近似值，实际带宽和需要的硬盘容量根据不同的录音环境可能会有所不同。
这结果是假设每台摄影机的设定值皆相同
Units
时数
天
kbps

Mbps
Gbytes

如何使用NVR容量计算
  • 输入使用的摄影机数量
  • 从下拉式选单选择预定摄影机每天要录制的时数
  • 输入影片预定要储存于NVR的天数
  • 针对视讯串流的比特率，是选择每秒(kilobytes)比特率的摄影机传输。
  • If using audio, enter the audio's bitrate in kilobytes per second.
  • 点选“计算”按钮显示总共需求带宽和硬盘容量

This lens calculator can provide the viewfield dimensions for a given focal length and distance, or provide the focal length for a given viewfield width/height and distance.

The values generated by this calculator are for the user's reference only, and may not meet the user's actual requirements (picture clarity, etc.).


1. Calculate the Viewfield with Given Focal Length and Distance:


2. Calculate the Focal Length with Given Width of Viewfield and Distance


3. Calculate the Focal Length with Given Height of Viewfield and Distance