External alpha masking

[Mylenium]

Hi!

I'm trying to mask an animation with a prerendered external mask. The source images are rendered as premultiplied from my 3d app. When using the external mask i get a thin border from the antialiased edge of the alpha mask. This is a classic problem.. How do i get past this in AE?

Regards Johan.

Effects -> Channel -> Remove Color Matting

Mylenium

[Hardrawk]

But of course!!! You made my day.. Thanks a million..:love:

Regards Johan.

[MichaelMaehring]

Thanks Mylenium!

One more thing:
apply the remove color matting effect before adding other effects

regards,
m°

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