finally I installed the gstreamer good, bad and ugly plugins and it's running now, but with the capture examples I'm getting this error:

Not sure what the source of the crash could be, but here a couple of things to try out:

1) GSCapture uses the v4l2src source element by default, but some older cameras work with v4lsrc. You can force using the latter by doing:

cam = new GSCapture(this, 640, 480, "v4l2src", "/dev/video0");

(where you also have to specify the device file of the camera)

2) You can run a capture pipeline from the command line:

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! video/x-raw-rgb, width=640, height=480, bpp=32, depth=24 ! ximagesink

or

gst-launch-0.10 v4lsrc ! ffmpegcolorspace ! video/x-raw-rgb, width=640, height=480, bpp=32, depth=24 ! ximagesink

If any of these two pipelines work ok, try it out from Processing using the GSPipeline class (look at the Pipelines/Test example).

thanks for your answer. I'll try this two things.