[Bug 758219] New: uvch264src freezes when using its "vidsrc"

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=758219

            Bug ID: 758219
           Summary: uvch264src freezes when using its "vidsrc"
    Classification: Platform
           Product: GStreamer
           Version: 1.x
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: vbence at czentral.org
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 315732
  --> https://bugzilla.gnome.org/attachment.cgi?id=315732&action=edit
Output of using both sources.

When starting the following chain:

gst-launch-1.0 -v -e uvch264src device=/dev/video1 name=src auto-start=true \
      src.vfsrc ! queue !
video/x-raw,format=\(string\)YUY2,width=320,height=240,framerate=10/1 !
xvimagesink sync=false \
      src.vidsrc ! queue ! video/x-h264,width=1280,height=720,framerate=30/1 !
h264parse ! avdec_h264 ! xvimagesink sync=false

the sresult is only the viewfinder (vfsrc) emitting a single frame. If I remove
the vidsrc part, the result is (as expected) a live preview of the camera:

gst-launch-1.0 -v -e uvch264src device=/dev/video1 name=src auto-start=true \
      src.vfsrc ! queue !
video/x-raw,format=\(string\)YUY2,width=320,height=240,framerate=10/1 !
xvimagesink sync=false

1st machine tested:
Linux 3.16.7-ckt11
GStreamer 1.7.0 (GIT)
Logitec C920-C

2nd machine:
Linux 3.16.0-4-amd64
GStreamer 1.4.4
Logitec C930

I attached the file with the output of:
gst-launch-1.0 -vvv --gst-debug=uvch264src:5 -e uvch264src device=/dev/video1
name=src auto-start=true       src.vfsrc ! queue !
video/x-raw,format=\(string\)YUY2,width=320,height=240,framerate=10/1 !
xvimagesink sync=false       src.vidsrc ! queue !
video/x-h264,width=1280,height=720,framerate=30/1 ! h264parse ! avdec_h264 !
xvimagesink sync=false


Already described here:
http://gstreamer-devel.966125.n4.nabble.com/uvch264src-Only-broken-examples-td4665446.html

I just noticed this issue is already flagged as invalid in
https://bugzilla.gnome.org/show_bug.cgi?id=756776 -- but no, 1.4.5 did not fix
it as I'm experiencing it with 1.7.

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