[Bug 703739] deinterlace: flickering with some DVDs

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=703739
  GStreamer | gst-plugins-good | 1.x

--- Comment #26 from David Schleef <ds at schleef.org> 2013-07-24 18:16:13 UTC ---
slomo,

IMO, fields=top/bottom or fields=all is a sane default when combined with the
linear filter.  There exists video content that will make any specific choice
look bad, but not too bad.

The best solution is to write a better filter than mode=linear, specifically
one that uses cross-field matching (copying good lines from adjacent fields)
and non-linear interpolation (such as edge-directed interpolation).  We have
yadif in -bad, which is a drop-in replacement for deinterlace, but is GPL-only.

I am slowly working up to either rewriting yadif (with an MIT or LGPL license)
or writing a new algorithm.  We need this at Rdio and it's on my to-do list,
but is low priority since yadif and ivtc are adequate.

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