Do you know how to calculate the storage space of recording

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Do you know how to calculate the storage space of recording for NVR/DVR?

Source: www.mvteamcctv.com

Date: 2015/12/07

With the video surveillance go ahead from SD to HD,clear and effective video and more details for video playback is demand by more and more customers, so the request for video storage get higher and higher.

How to calculate the storage space of recording,here we share you the details:
First we need to know some professional word:

1.Bit rate

Bit rate refers to the transmission of bits per second (bit) number. Units is bps (Bit Per Second),
the higher the bit rate, the bigger the data transfer.
Bit rate means how many bits per second needed for the encoded (compression)audio and video data,
higher the bit rate, quality audio and video, the better,and the encoded file is bigger.

2.Data Rate

Data Rate means the flow date for the video file used in unit time,
it's the most important part of the quality control of the encoding audio and video,
with the same resolution,the Data Rate is bigger,the smaller the rate of compression video,the higher for the quality of image.

After these two words clear,it's simple to calculate the storage space of recording.
Expressed by formula will be:
G(B)x0.9(R)x8(B)
T(S)= _____________
M(kb/s)xL
G(B)=M(kb/s)/8(B)XT(s)XT(s)XLX1.1(R)
(Note: T:storage time unit s, G: size of the HDD, L: recording channel,M:Bit rate, B:bit)

For example:
50ch DVR,recording 30days,with 720p 1.0mp cameras,storage space will be:
384kb/s×3600×24×30×50×1.1≈46.348TB

Shenzhen MVTEAM Technology Co.,Ltd. is a professional manufacturer and exporter of POE IP Camera,AHD camera,Hybrid DVR etc. with more than 10 years of solid experience on worldwide market, providing a comprehensive range of CCTV products to serve your needs on CCTV Security applications.
If you have any inquiry or technology questions about CCTV products,welcome to contact us.

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