[Bug 659322] Videomixer with size changing support as parameter.

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Mon Sep 19 01:09:14 PDT 2011

  GStreamer | gst-plugins-good | git

--- Comment #7 from Sebastian Dröge <slomo at circular-chaos.org> 2011-09-19 08:09:08 UTC ---
Why would adding width/height scaling properties to videoscale prevent scaling
beyong original size? It would allow to do the same that is currently possible
by changing the downstream caps. videoscale would never crop but scale to the
requested width/height.

Instead of copying the videoscale code it would make sense to refactor it into
a library and use the public API of that library from videoscale and videomixer
and possibly other elements. That's the plan for 0.11 (and the same for video
format conversion, audio format conversion, resampling, ...) but it could be
done for 0.10 too already.

Ideally there would be a videocomposition element that allows you to
scale/crop/rotate/position different video streams and composite them with
different operations (ADD, SUB, OVER, ...) in different orders.

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