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Unregistered
August 30, 2004, 11:32:29
I am working on an application that needs to stream more than 2 USB cameras to a computer. Everything is fine as long as use 2 web cams. But when I connect a third one , which is a digital camera - cum - web cam the following error message
"USB Controller Bandwidth Exceeded"
is being displayed and the third camera is not streaming.

Please tell me how to overcome the problem.

Aravind
India.

Stefan Geissler
August 30, 2004, 12:20:06
Hello,

If you want to see the live video stream of all three cameras, then you must insert an additional USB controller into your computer.

If you only want to see images in sequence from one camera to the next, you must start the first camera, snap the image and stop it again. Then proceed with the next cameras in the same way.

Also you can try to use a video format, that needs less memory, e.g. YUV instead of RGB, Y411 instead of YUV etc. Also the frame rate should be reduced.