[Bug 645427] New: camerabin throws an error in gst_camerabin_capture_start gstcamerabin.c(4036)

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=645427
  GStreamer | gst-plugins-bad | 0.10.21

           Summary: camerabin throws an error in
                    gst_camerabin_capture_start gstcamerabin.c(4036)
    Classification: Desktop
           Product: GStreamer
           Version: 0.10.21
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: pvillavi at gnome.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
      GNOME target: ---
     GNOME version: 2.31/2.32


this bug report has been filed here:

https://bugs.launchpad.net/ubuntu/+source/gst-plugins-bad0.10/+bug/734600

"An easy way to observe the error is using web_cam_box.py

Steps:
1. bzr branch lp:quidgets
2. cd quidgets/quickly/widgets
3. python web_cam_box.py, note that the default web cam is displaying properly
4. Click the "picture" button, this emits the capture-start signal

Result, an error message is retrieved from the bus:
Error: GStreamer encountered a general core library error.
gstcamerabin.c(4036): gst_camerabin_capture_start ():
/GstCameraBin:camera-source

Expected:
An "image-captured" message is sent on the bus

Package: gstreamer0.10-plugins-bad 0.10.21-1ubuntu4
"

"Running with GST_DEBUG=2 ...

rick at rick-mini10v:~/Projects/quidgets/quickly/widgets$ GST_DEBUG=2 python
web_cam_box.py
0:00:00.079447007 1812 0x9c799e0 WARN GST_REGISTRY
gstregistry.c:1184:gst_registry_scan_path_level:<registry0> ignoring old plugin
/usr/lib/gstreamer-0.10/libgstvalve.so which has been merged into the
corelements plugin
** Message: pygobject_register_sinkfunc is deprecated (GstObject)
0:00:01.155537967 1812 0xa223b58 WARN default
xoverlay.c:354:gst_x_overlay_set_xwindow_id:<autovideosink0-actual-sink-xvimage>
Using deprecated gst_x_overlay_set_xwindow_id()

0:00:08.351641219 1812 0x9c799e0 WARN camerabin
camerabinimage.c:620:gst_camerabin_image_link_elements:<camerabinimage0>
linking element failed
0:00:08.351846865 1812 0x9c799e0 WARN camerabin
gstcamerabin.c:1042:gst_camerabin_change_mode:<camera-source> state change
failed
0:00:08.351947067 1812 0x9c799e0 WARN camerabin
gstcamerabin.c:4036:gst_camerabin_capture_start:<camera-source> error: starting
capture failed
Error: GStreamer encountered a general core library error.
gstcamerabin.c(4036): gst_camerabin_capture_start ():
/GstCameraBin:camera-source
"

Thanks in advance,

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