Peter

I'm working on the project where i want to detect motion across a long corridor. I'm setting up 4 usb web cameras on the ceiling of the hallway (creative live cam optia, logitech quick cam deluxe for notebooks, microsoft lifecam vx-500 and creative cam optia AF).

Each of them works completely fine when they're connected one by one in max msp. But when i have three or four jit.qt.grab objects i get two pictures and either an error msg saying: "jit.qt.grab: error -536870164 setting vdig compression type", or no signal in the third and fourth window.

Is there a way to convince the max msp that i would really like to have this four cameras work? Or is it swimming against the current?

Here's a really basic patch that i'm using.

Multiple Webcams - 4 web cameras usb