Reading from Webcam to display as a background

General Discussion
3

Any body has working solution ?
None of the above worked .
Recent one gave me this error

  glxGraphicsPipe
(all display modules loaded.)
:device(error): Error adding inotify watch on /dev/input: No space left on device
TRYING WITH WebcamVideo
:vision(error): Failed to map buffer!
:vision(error): Failed to map buffer!
:vision(error): Failed to map buffer!
:vision(error): Failed to map buffer!
WebcamVideo based texure infos: -> 2d_texture HD WebCam: HD WebCam
  2-d, 1280 x 720 pixels, each 3 bytes, rgb
  sampler wrap(u=repeat, v=repeat, w=repeat, border=0 0 0 1) filter(min=default, mag=default, aniso=0) lod(min=-1000, max=1000, bias=0)  2764800 bytes in ram, compression off

Segmentation fault (core dumped)