I get an error with V4L2_CID_AUTOGAIN and
V4L2_CID_EXPOSURE_AUTO )
I also don't manage to tune exposure, or white balance..
Is it possible to do that?
Thanks in advance!
Regards
Julien Quelen
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Hi Laurent,
On Sun, 2007-05-13 at 23:14 +0200, Laurent Pinchart wrote:
> Hi Julien,
>
>
> On Friday 11 May 2007, julien quelen wrote:
> > Hi all,
> >
> > I am trying to build a synchronized multiple cameras capture.
> > I started with 2 Logitech QuickCam Ult
mmap method, USB isochronous transferts). Frames appear to be more
or less synchronized. However sometimes, the 2 cameras start totally
dephased.
Is there a way to be more precise in the image capture start?
Thanks in advance for any help!
Julien Quelen
I just tried:
#define UVC_URBS10
#define UVC_MAX_ISO_PACKETS 20
in uvcvideo.h
and I have the same problem...
Regards,
Julien Quelen
On Thu, 2007-05-10 at 13:21 +0200, Laurent Pinchart wrote:
> Hi Julien,
>
> > On Thu, 2007-05-10 at 10:56 +0200, Laurent Pi
Hi Laurent,
On Thu, 2007-05-10 at 10:56 +0200, Laurent Pinchart wrote:
> Hi Julien,
>
> > I am working on video capture with several cameras.
> > I have Logitech QuickCam UltraVision webcams.
> >
> > Is it possible to reduce the number of packets per isochronous URB in
> > uvcvideo driver?
> > By
Hello,
I am working on video capture with several cameras.
I have Logitech QuickCam UltraVision webcams.
Is it possible to reduce the number of packets per isochronous URB in
uvcvideo driver?
By default, UVC_MAX_ISO_PACKETS is egual to 40.
When I change this value to 10 for example, image captur
