Webcam error 'could not render capture stream' and 'could not preview graph'

lottemedema's icon

Hi all,

Something weird happens when I'm trying to use a extern webcam for videotracking. I have an inbuild webcam but want to use an extern one. This one is installed and working well. In the patcher that I've written it picks the default webcam, which is the webcam that is build into my laptop. I can't get Windows 7 to change my default cam, as I can't see the inbuild cam anywhere.

When opening the help of 'jit.dx.grab', it shows in the basic help a program where you can select the webcam that you want to use. It shows the external webcam and if I select it it works perfectly IN the help.

BUT, if I copy and paste the exact same file into a new patcher, it suddenly stops working and gives the message 'could not render capture stream' and 'could not preview graph'. This seems weird to me as it is EXACTLY the same file that I copy and paste... Is there something that I miss?

Hope you guys can help me out!
Lotte