do you capture from all 12 at the same moment? maybe spread them around, a different one every 200 msec
-They do not have to be synchronous, but the interval needs to be precise, ie. low jitter. I've tried repeatedly opening and closing the streams every 2.4 seconds and that almost works....it was stable for about 5 or six minutes before I started loosing streams...interestingly after about 10 hours of opening and closing all of the cameras "died" and I had to unplug the to get them working again. > usb controller or usb device is usually responsible URB errors. ... > 27 is EFBIG in this case, in 2.6.39.3 there are 5 references to EFBIG in drivers/usb. the three in drivers/usb/host/ehci-sched.c are associated with debug messages so if you activate the messages (google, i don't remember how) you'll narrow it down a bit. while you're at it you might want to add debug messages to the other two references in drivers/usb/host/uhci-q.c this is all modulo which kernel version you are running (and can get pretty hairy). the usb devel mailing list might be helpful. I've been talking to people on the linux-usb list and they're being very helpful. Thanks! hth _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel -- /* Jason Pitt PhD 206.667.5603 Roth Lab jp...@fhcrc.org Basic Sciences Division Fred Hutchinson Cancer Research Center 1100 Fairview Ave N A3-135 Seattle, WA 98109 */ _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
