OT: calculate network bandwidth.

Nov 15, 2007 5 Replies
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Good Folks, I have a camera with VGA resolution and want to calculate required ~bandwidth for that.



VGA 640x480


640 x 480 = 307200 pixels
307200 x 1024 = 300 kilo pixels (or divide by 8?)
300 x 1024 = 0.3 Mega pixels

Let frame rate be 25 fps.



required bandwidth = ? (assuming there will be no other traffic)


thanks ali


Found interesting calculator here

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and tested it with 212PTZ camera model.

I think 0.3 Mega pixels multiply by number of frames gives us the traffic load.

ali

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Yes, but the units are pixels per second, which may or may not be what you are actually looking for. If this is being sent as a single digital data stream, the bits-per-pixel is needed as another multiplier, to give Mbits/sec data speed, and network packet overhead goes on top of that.

-jg

here

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jg, sorry can't get your very point.

Yeah, pixel is not equal to bit and one pixel consists on multiple bits.

ali

Op Thu, 15 Nov 2007 08:21:23 +0100 schreef Ali :

Using which layer of which transport protocol?

Gemaakt met Opera's revolutionaire e-mailprogramma: = http://www.opera.com/mail/

This makes apr. 123 megabits/second at 16 bits per pixel. You need to include some protocol overhead etc., 135 MbpS should suffice - if you have the entire network, no collisions etc. Some compression - e.g. simple like RLE - can dramatically reduce these figures.

Dimiter

------------------------------------------------------ Dimiter Popoff Transgalactic Instruments

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