Megapixel Cameras

[Fortuna PS 0]

Hi

I would like to know the following if someone is using a megapixel camera.

 

3MP running 5 fps = MB/s transfer rate

3MP running 24 fps = MB/s transfer rate

 

I look forward to hearing from you.

 

Regards

[Soundy 1]

There is no clear answer, because the data rate depends on so many different variables.

 

If you're running a camera/codec that supports constant bitrate (CBR), then the rate is whatever you determine it should be, and the camera adjusts other parameters to achieve that.

 

If it's VBR (variable bitrate), then actual dataflow will change depending on scene complexity, sharpness, amount of movement, level of compression, saturation level, codec used, and so on. A view of a static grey wall will use a fraction of the bandwidth of, say, a busy freeway scene, assuming all settings are the same between both.

[Nimrod 0]

Free bandwidth calculator.

 

http://download.cnet.com/IP-Camera-Bandwidth-Disk-Space-Calculator/3000-2348_4-10602114.html

[NotoriousBRK 0]

Soundy is correct. You haven't provided enough data for anyone to give you any useful answers.

 

First there is the stream format. It could be MJPEG, MP4, or h.264. Bandwidth variances between those 3 formats could yield results ranging from 25Mbps (MJPEG) to 4Mbps (h.264). Depending on the format, more fps doesn't always equal more (or significantly more) bandwidth.

 

Do you have specific camera models and applications in mind?

[Fortuna PS 0]

Hi

I downloaded the calculator that Nimrod sent the link for and it is a great tool.

 

Thanks

 

Ray

[fa chris 0]

The manufacturers website usually has tools for calculating this information too. Sometimes it takes a little bit of searching and sometimes you're required to register, but it's always there.

[Aban-CCTV-Camera 0]

Cheers Nimrod, great tool!