[FFmpeg-devel] [PATCH] add yuva420p support

[Aurelien Jacobs]

Hi,

I'm currently implementing support for VP6A inside the vp6 codec. This
will output planar YUV with an additional alpha plan.
The attached patch add support for this new colorspace. For now this
colorspace is displayed and converted the same way as yuv420p
(ie. ignoring the alpha plan). Adding support for converting yuva420p
to yuv420p into libswscale, using the alpha plan information and
rendering on a uniform color background would be great, but is not
implemented for now.

Is this patch OK ?

Aurel
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