[Bug 629244] [opencv] Add motion detection element

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=629244
  GStreamer | gst-plugins-bad | git

--- Comment #44 from Stefan Kost (gstreamer, gtkdoc dev) <ensonic at sonicpulse.de> 2011-05-09 08:09:07 UTC ---
(In reply to comment #41)
> Hi Nicola,
> 
> How can I post on the bus the video frame ? 
> Do you can show me an example or give me more explanation ?

Nicola, usualy bus message with analysis result will contain the timestamp of
the frame they related to. One could also send the result as a event downstream
and flag it so the the sink will emit the message with the same data as the
event. This way elements and the app will get the data.
Sending the whole buffer might create quite a bit of overhead, if would
definitely be great if this would be at least optional.

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