[Bug 668018] New: Adds generate-frames option to v4l2src for better support of signal loss cases

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=668018
  GStreamer | gst-plugins-good | git

           Summary: Adds generate-frames option to v4l2src for better
                    support of signal loss cases
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: anthony.violo at ubicast.eu
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


If generate-frames is set to True, black frames will be generated during
capture when the v4l device loses signal.

Exemple pipeline with generate-frames=true:

gst-launch v4l2src device=/dev/video0 generate-frames=true ! xvimagesink -v

If the device loses the signal, instead of issuing an error, v4l2src will
continue generating frames similar (in resolution and format) until the signal
is up again.

Note: this case does not appear with webcams, mostly with frame grabbers and
similar.

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