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DVR large ones have a common road,womens air max 2010 2010年秋季最风行女装跟搭配方式, 2, 4, 8, 9 Road, 12 Road and 16 Road. Maximum can be connected to eight 2000GB hard drive, with a total capacity of up to 1.6T (currently the largest market in the 1000GB hard drive or so), if the use of CIF resolution, usually every hard disk capacity 1 channel 180MB ~ 250MB / hour, usually value of 200MB / hour; if D1 resolution video required hard disk capacity per hour is 720MB ~ 1000MB / hour, usually in order to reduce the capacity of the hard disk can be in accordance with the 500MB / hour, 25fps frame rate less than smart set, stream should be less! I believe we can calculate a full eight of the 16 500GB hard drive video recorder for how long?
calculation example: 8 CIF format video 24 hours a day for 30 days hard disk capacity required?
8 Road × 200M × 24 小时 × 30 days ÷ 1024M = 1125G (Note: 1G = 1024M)

general engineering calculation: the amount of data per hour * 24 hours * days =? ? G
various resolutions of what kind of stream can get better image quality
DS-8000HC Embedded Network DVR supports multiple resolutions,air max 90 trainers, we generally use the CIF , DCIF, D1 three. In different video resolution,golf adidas, we recommend that users set the mode using the following code stream
CIF: 512Kbps, variable bit rate setting in the image quality select
DCIF: 768Kbps,adidas originals samba 大学生送诊不迭时身亡曾求救, variable bit rate setting in the image quality select Rate the image quality settings select the stream size × 3600 ÷ 8 ÷ 1024 = MB / hour DVR hard disk capacity calculation
the following formula:
hour video file size × DVR recording time × day × large ones need to preserve the number of days
example: 8 hard disk recorders, video and audio recording, set by 512Kbps stream video 12 hours a day timer,timberland boys boots, video data retention for 15 days, calculated as follows:
hour video file size = 512 × 3600 ÷ 8 ÷ 1024 = 225MB
DVR required Hard disk capacity = 225 × 8 × 12 × 15 = 324000MB ≈ 320GB
audio stream to a fixed 16kbps,supra stores 莫斯科南部公车站发明一名男性头骨逝世, share of capacity per hour is very small, can be ignored
hard drive takes time calculation: calculation of the normal picture quality, each hour 200M. For example, hard disk recorders 16,air max 2010 volt, while recording a total of occupation under an hour drive 3.2G. Depending on the application site, dynamic video, etc. can be used for video, thus ensuring an effective part of the video data are.
hard disk will automatically record over video footage circulating on the front cover. Available CD burner will require long-term preservation of video content carved in the disc.
some cases,timberland smart comfort system, to reduce the input drive can be set per way per hour 100M video quality, but the picture quality is not guaranteed. Recommended only in less demanding circumstances.

mainstream DVR currently uses two types of resolution: CIF and D1.

CIF quality
Half-D1 quality
D. CIF quality
D1 quality general activities
25-200M / h
60-430 M / h
50-400 M / h
110-800 M / h complex / vigorous activity
50-250 M / h
150-680 M / h
150-680 M / h
190-900 M / h at night / low light
25-150 M / h
130-380 M / h
90-280 M / h
190-500 M / h

take a variety of DVR hard disk space and video quality comparison chart