Remove black to add an alpha channel to a lighting effect.The UnMult plug-in generates an alpha channel for a lighting effect, allowing it to be applied to your footage using the Normal transfer mode in After Effects or another program. It does this by un-premultiplying the RGB to reach full saturation and then attenuating the alpha by the same amount. UnMult assumes your lighting effect (a lens flare, for example) is applied to a black solid with a fully opaque alpha channel. After applying UnMult, the lighting effect may appear unchanged, but the pixel values will have been modified to use a semi-transparent alpha.
1.2 (Current version) – Aug 27, 2025
First version posted to aescripts
️ Aescripts UnMult V1.2 Win Mac – (482 KB)
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https://usersdrive.com/24ehcfyp7nj4.html
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https://rapidgator.net/file/513c2f43edc7374c3b64305feb845b3a/Aescripts.UnMult.V1.2.Win.Mac.rar