[Bug 666524] Decklinksink element (from decklink plugin) seems to only work with videotestsrc

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=666524
  GStreamer | gst-plugins-bad | 0.10.22

--- Comment #15 from Joao Paulo Pizani Flor <joaopizani at gmail.com> 2012-01-05 12:20:27 UTC ---
My "rationalization" as for why the ordering matters is that the videorate
element works by frame dropping and duplication. So, when videorate is inserted
too "early" in a complex pipeline, the further processing by other elements
cause "deviations" in the timestamps of the frames that break the very strict
framerate requirement of decklinksink...

Anyways, I also think it shouldn't matter, and it would be nice to hear the
opinion of a more experienced GStreamer developer about this :)

Regarding interlace, YES, decklinksink does require interlaced video... the
property "interlaced=true" is there, in the FIXED caps set of decklinksink's
sink pad.

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