Hi Mustafa, Sorry for the late reply.
On Friday 16 April 2010 09:06:48 Mustafa CAMURLI wrote: > Hi everyone, > > I am Mustafa from Turkey. I have a school project named "eye-tracker and > viewer" in this semester. I have two cameras. One for retrieving eye frames > to find where pupil is, second for viewer frame where the user looking at. > So, we are using opencv in order to grap frames and for vision > functionalities. In Windows, surprisingly, we can grab frames both cameras, > but unfortunately, in Linux we can't. We can open just one camera at the > same time. When we try to grab a frame from second one, "VIDIOC_STREAMON no > left memory on the device 28" error occurs. Please help us for this problem. > If you need any additional info, just reply this mail. Error 28 is ENOSPC. This means the operation you tried to perform would use more USB bandwidth than available. This is usually the case when you capture uncompressed high-resolution video from two webcams simultaneously. You could try to select a smaller frame size, or use a compressed format if your cameras support that (many UVC camera support MJPEG). -- Regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
