Re: [ros-users] webcam driver for ros

>     Hi Harmish,

>     I have had good results using the usb_cam driver on my Logitech
>     Quickcam Pro.

>     I did not have to edit the source code, but I did need to provide
>     a new pixel format as a parameter.  Try using this launch file:

>     <launch>
>     <node pkg="usb_cam" type="usb_cam_node" name="cam">
>     <param name="video_device" value="/dev/video0"/>
>     <param name="pixel_format" value="yuyv"/>
>     </node>

>     </launch>

>     -Adam

>     On Tue, May 11, 2010 at 12:21 PM, Harmish Khambhaita
>     <harmish.khambhaita@dfki.de <mailto:harmish.khambhaita@dfki.de>>
>     wrote:

>         hello,

>         i am trying hard to make logitech quickcam pro 4000 to work
>         with ros. i have tried following drivers without sucess.

>         gencam_cu - problem to link wiht libroslib.o - recompiling
>         does not solve the problem !!
>         logitech_usb_webcam - making does not give any executable
>         usb_cam - has problems with ioctl(fd, VIDIOC_S_FMT, &fmt) -
>         gives error 22 - invalid parameters
>         uvc_cam - has problems with ioctl(fd, VIDIOC_S_FMT, &fmt) -
>         gives error 22 - invalid parameters - i succeed in bypassing
>         these errors by changing fmt.fmt.pix.pixelformat to
>         V4L2_PIX_FMT_YUV420 and changing buffersize (NB_BUFFER = 2),
>         however now i have segmentation fault

>         if anybody have success running a webcam with ros, i would be
>         thankful to know the driver and camera you are using.

>         cheers,
>         harmish.
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