[Bug 703399] v4l2: don't extract data from caps twice

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=703399
  GStreamer | gst-plugins-good | git

--- Comment #7 from Paul HENRYS <visechelle at gmail.com> 2013-08-30 10:09:31 UTC ---
Sorry, did not notice the answer in my duplicate bug :s

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