[XviD-devel] RGBA 32Bit input format

suxen_drol suxen_drol at hotmail.com
Wed Jun 11 23:09:38 CEST 2003


On Wed, 11 Jun 2003 13:43:07 +0200 "Florian Schaper" <fschaper at zerodegree.de> wrote:
> Hello,
> 
> is it possible (or planned) to have 32Bit input for the XVid codec so you
> could use 8Bit alpha masks in AdobeAfterEffects or their like? I understand
> that in most cases it is sufficient to have 24Bit but I'm in desperate need
> of an codec supports alpha masks (like the huffyuv codec) _and_  that has
> good compression rate .

hi.

xvid supports bgra input, but ignores the alpha channel.
whilst mpeg4 does support alpha channel coding, xvid doesnt support
alpha encoding/decoding. iam unaware of any mpeg4 codec that supports
alpha (or obmc for that matter...).

-- pete




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