[Bug 687182] playbin: autoplugging s/w and h/w accelerated deinterlacers

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=687182
  GStreamer | gst-plugins-base | git

--- Comment #34 from Gwenole Beauchesne <gb.devel at gmail.com> 2014-09-15 17:10:43 UTC ---
(In reply to comment #32)
> There was some work recently and making playbin handle the case correctly where
> these postprocessing is handled by the video sink. I think we should handle
> that case first, and then go back to this bug afterwards.

I think there is new infrastructure in place for GStreamer >= 1.4 to support
GstColorBalance interface in sinks, and not add videobalance, but I haven't
seen anything for deinterlace.

Besides, it would be great if it could also add an intermediate element that
handles HW colorbalance for instance, but this would be another bug report.

The reason I ask is because if a sink supports
video/x-raw(meta:GstVideoGLTextureUploadMeta) but not GstColorBalance,
autopluging machinery would fail because it would try to add the videobalance
element, which does not support video/x-raw(ANY), obviously.

sree's proposal makes sense to me and could possibly handle those things at
playsink level too with ease.

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