I have the same issue and figured out the cause of it (but not yet how
to solve this). When you comment out the following line:
self.camerabin.set_property("image-
encoder",gst.element_factory_make("pngenc", "png_encoder"))
it works fine, except that it'll save as jpeg then instead of png.
As for the questions:
1) The same thing happens with stock gstreamer from Natty as from gstreamer
installed from the gstreamer-developers ppa
2) I commented out the following:
imagesink.set_xwindow_id(self.video_window.window.xid), which made
gstreamer creates its own window to show the webcam output. I also tried
using a fakesink so that nothing is shown. Both methods don't fix this
problem.
3) Going to attach those to this bug.
4) That works fine, I launched it and afterwards closed the window once I could
view my webcam:
$ gst-launch camerabin
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element
/GstCameraBin:camerabin0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage:
Output window was closed
Additional debug info:
xvimagesink.c(1311): gst_xvimagesink_handle_xevents ():
/GstCameraBin:camerabin0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage
Execution ended after 1695783781 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
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https://bugs.launchpad.net/bugs/734600
Title:
camerabin throws an error in gst_camerabin_capture_start
gstcamerabin.c(4036)
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