[Bug 729887] decklinksrc requires output sinks to run with sync=FALSE.

Tue Jul 8 08:13:48 PDT 2014

https://bugzilla.gnome.org/show_bug.cgi?id=729887
  GStreamer | gst-plugins-bad | 1.2.4

--- Comment #10 from Nicolas Dufresne <nicolas.dufresne at collabora.co.uk> 2014-07-08 15:13:39 UTC ---
Interesting, we completely ignore provided timestamp, and craft our own:

GST_BUFFER_TIMESTAMP (buffer) =
      gst_util_uint64_scale_int (decklinksrc->frame_num * GST_SECOND,
      mode->fps_d, mode->fps_n);
  GST_BUFFER_DURATION (buffer) =
      gst_util_uint64_scale_int ((decklinksrc->frame_num + 1) * GST_SECOND,
      mode->fps_d, mode->fps_n) - GST_BUFFER_TIMESTAMP (buffer);

If there is a drift between the decklink and the pipeline clock it won't work
well. This need fixing.

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