Sounds like a driver problem. I recall putting in some sort of reset message and along with sending new dimensions it would pretty much work like instantiating pix_video again. But the nature of Quicktime might not allow for an app to recover a device that drops out without either restarting the app or the computer.

On Tue, Apr 24, 2012 at 11:34 AM, Florian Grond <fgrond@techfak.uni-bielefeld.de> wrote:

Hi List,

I use in my installation a USB 2.0 camera. Most of the time everything works as it should however occasionnaly the camera input disappears and I see a white texture instead.
I replug the camera and restart and it works fine
however if I try to fix it with the patch running
I get when I try to send the pix_video the message device 6:
could not make new SG channel error -9405

I send teh message enumerate and I see
could not get SG channels device list

Any idea if this depends on the camera I use or if there is any way to make pix_video "see" the usb camera again after replugging it?

Thanks,

Florian

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