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

[GStreamer (GNOME Bugzilla)]

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

--- Comment #4 from Bence Varga <vbence at czentral.org> ---
The first pipline is the only one that currently works: reading raw from the
vfsrc. My goal is of course to use the h264 from the vidsrc, but even hooking a
fakesink to it will stop the whole (otherwise functional) chain from working.

I don't think USB bandwidth is an issue I'm getting the same result by running
the following pipeline (window with a single frozen frame):
gst-launch-1.0 -v -e uvch264src device=/dev/video1 initial-bitrate=2000000
average-bitrate=2000000 iframe-period=3000 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=320,height=240,framerate=30/1 ! h264parse ! avdec_h264 !
xvimagesink sync=false

(This is the example from
http://oz9aec.net/index.php/gstreamer/487-using-the-logitech-c920-webcam-with-gstreamer-12
but with lowered resolution and bitrate parameters for uvch264src).

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