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Editorial Team
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Asked: 2026-05-27T22:45:00+00:00

I am using opencv 2.1 on ubuntu 11.10. When i tried to run a

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I am using opencv 2.1 on ubuntu 11.10. When i tried to run a sample program to manipulate video from two usb web cameras an error shown as below

I tried the statement $ v4l2stereo -0 /dev/video0 -1 /dev/video1

Got an error like this

hue is not supported
hueauto is not supported
VIDIOC_S_FMT error 16, Device or resource busy

When i changed the command like this $ v4l2stereo -0 /dev/video1 -1 /dev/video0
I got an error like 

hue is not supported
hueauto is not supported
hue is not supported
hueauto is not supported
(Left image:2388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(Left image:2388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(Left image:2388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(Left image:2388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
Failed to acquire images

Kindly Help me
Thank You

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1 Answer

  1. Editorial Team

    Installing gtk2-engines-pixbuf should do the trick for the video problem:

    $ sudo apt-get install gtk2-engines-pixbuf
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