Export image with an alpha channel - BUT keep the entire image.

Question

Hi everyone,

I have a quick question that I hope someone could help me shed some light on:

I want to export a series of VFX comps for grading. I would like to export my full image, but with an embedded alpha channel. So the image has an alpha channel, but if I reimport it and switch the Alpha off the entire image reappears.

Is there any way to do this in AE? In Nuke and Fusion it doesnt seem to be a problem, but I cant seem to find a way to do it in AE.

Hope you have an idea ❤️

takashi vfx · Accepted Answer

also you can import RBG and Alpha layer in the comp, and export as exr sequence.

Warren Heaton10841144 · Answer

@christenb93456552

I've gotten this to work by using the Stencil Alpha Blending Mode on the front most Layer to create the transparency in the Composition and then render to a 32-bit Targa Image Sequence with the alpha set to Premultiplied.

Otherwise, it's rendering a RGB movie with any method of creating Layer transparency disabled and then a second Alpha Only movie with whatever is being used for Layer transparency enabled and using those two files together.

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