Bit of a long shot this one but what about this as a solution.
If you exported your video as a Real Video clip you can then capture
it's image using
imgObj=member("RealVideo").image
then you could create an 8 bit alpha dynamically using Imaging Lingo
HTH
Kevin
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Mathew Ray
Sent: 31 January 2003 14:27
To: [EMAIL PROTECTED]
Subject: Re: <lingo-l> Movie transparency
Actually, I just exported a png sequence with an embedded alpha channel
using AFX5.5, and it works fine... its true a VIDEO file doesn't have
transparency per-se unless you add a mask to it, but you can fake it
with image sequences, just watch out for performance issues as Charlie
mentioned.
~Mathew
Robin Said:
> After effects cannot render movies with a transparent background, the
> only way I would achieve what your trying to do is use still images.
> one for
the
> image and on for the alpha/mask of each frame of the sequence.
>
> you can output the sequence from after fx once with the main image and
once
> for the alpha then import those into director and place the images in
> this sequence,,
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