opencv and v4l [was Re: Anyone got qc-usb working with kernel 2.6.28 and amd64?]

[Micha Feigin <michf@post.tau.ac.il>]

Turns out that the camera mostly works (camorama and v4lgrab.c both work,
xinetv doesn't) seems that just opencv won't work with the camera with and error
HIGHGUI ERROR: V4L: device /dev/video0 is unable to capture video memory.
any ideas on what could this be?

Thanks

On Mon, 5 Jan 2009 03:24:35 +0200
Micha Feigin <michf@post.tau.ac.il> wrote:

> I'm trying to get a Logitech, Inc. QuickCam Web (lego webcam based on logitec)
> working on my box running kernel 2.6.28 amd64 kernel. I managed to fix
> compilation errors using a patch I found on the bug tracking system plus some
> extra modifications. The resulting driver loads and recognizes the camera but
> xawtv doesn't give any output (black screen), the test program that comes with
> driver gives zeros for mem_map mode, it does seem to give and image for read
> mode. I also tried a sample program with opencv which complains
> HIGHGUI ERROR: V4L: device /dev/video0 is unable to capture video memory.
> I can't downgrade the kernel since I need the newest e1000e for my network
> card (anything older and the network card isn't supported).
> 
> Thanks
> 
>