How to use Render Queue to render Alpha Channel with PPV Stencil material？

Development Rendering
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1

Now the 4.25’s have movie render queue,Im trying to render exr and png file(with alpha).

Is there any way that use the Post Process Custom stencil but still keep the alpha Layer？
(Like white & Black mask Stencil Material)

When I was rendering the Exr and Png file And try bring the pic into photoshop, the Alpha channel is still in there but the target I wanna render do not have a mask, all the Alpha channel is transparent.

Thanks a lot to clip in this question!

2

Hello I have the same problem, I would like you to be able to solve it in the final version of 4.26. Currently I am using the 4.26 test, the way I found to obtain the alpha channel is by removing the post proscess render material and then place the material again in order to obtain 2 renders, one with the active alpha channel and the other with the effect but without the active alpha channel