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Author Topic: How long does it take...  (Read 1848 times)

richy2

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How long does it take...
« on: May 05, 2013, 04:04:15 PM »

How long does it take to get to the center of a tootsie roll pop...1...2 opps wrong forum

How long...hours /days/weeks can the video record to the hard drive?

How about the 32GB card ?

Please give some real numbers.. or a guesstomate.
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dave w

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Re: How long does it take...
« Reply #1 on: May 05, 2013, 05:26:22 PM »

If I understand the question: an hour of low compression NTSC video is about 12GB. Once you start compression that rule of thumb sorta goes out the window. MPEG2? MPEG4?, AVI? etc.
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richy2

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Re: How long does it take...
« Reply #2 on: May 05, 2013, 07:28:51 PM »

If I understand the question: an hour of low compression NTSC video is about 12GB. Once you start compression that rule of thumb sorta goes out the window. MPEG2? MPEG4?, AVI? etc.
I was trying to get some idea.. in days/hours with these cameras

airsight Compression: H.264, MJPEG or

X10 AirSight PTZ Wireless IP Camera using a sd card with the computer

on the lenght of time.
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dave w

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Re: How long does it take...
« Reply #3 on: May 06, 2013, 01:53:00 PM »

Sorry, Can't help you. Newer standards for static security cameras is far different from what I was familier with.
http://www.tereo.com/MJPEGvsMPEG4vsH264.aspx
It appears, the amount of motion a camera sees dramatically affects the amount of compression that can be applied to the video. In other words a camera using H264 codec compression pointed at an empty livingroom will, at the end of the day, create a much smaller file than a camera pointed at a busy street. Amount of compression and file size is dynamic and varies with the amount of motion in the frame. So you might start a new file and look at file(s) size 24 hours later for an estimate.  
« Last Edit: May 06, 2013, 01:57:48 PM by dave w »
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