[Bug 694078] avenc_huffyuv does not respect alpha channel

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=694078
  GStreamer | gst-libav | git

--- Comment #1 from Dirk Van Haerenborgh <vhdirk at gmail.com> 2013-02-18 12:18:25 UTC ---

This seems to be originated from a preference of the huffyuv developer, as
explained in [1], section 'Enable RGBA compression'.

It seems you have to explicitly set bgr32 (in the HYuvContext, [2]) to >0, in
order to enable the alpha channel

[1] http://neuron2.net/www.math.berkeley.edu/benrg/huffyuv.html

[2]
http://git.libav.org/?p=libav.git;a=blob;f=libavcodec/huffyuv.h;h=c464d833c14d72cece19b5c2780fd32df48e8b9b;hb=HEAD

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