Post Effects Glare and Alpha

[aggiechase37]

I can get the post effect glare to show up when I have an alpha going in the live view, but when I render a final to picture viewer, the glare streaks don't seem to make it. I use the copy to video post command, and everything else carries over, but that one effect. What am I missing?

[bepeg4d]

The alpha mask is cutting the effect, but you can activate in the multipass tab the post-effect as separate layer, so you can compose it later on.
ciao beppe

[aggiechase37]

So I tried doing that but I'm guessing I'm missing a setting because what's going on in my image sequence files, doesn't seem to translate to what I want when I throw them into After Effects. Project file attached. Thanks in advance. I really do appreciate.

[bepeg4d]

Sorry, I must have been more specific.
Not the c4d multipass but the octane multipass:

try with this scene:

Shahidrah-b.c4d.zip

(89.03 KiB) Downloaded 302 times

ciao beppe

[aggiechase37]

That works great. Thanks so much!

[aggiechase37]

Well. I thought it worked great. But question. Do the post effects output not come with an alpha channel? I was wanting to overly this text over some footage with the light glare. Is there a way to get an alpha channel with the post light glare out of Octane?

I realize that I can take an alpha from luminance in After Effects, and now I've created a preset with the proper curves adjustments before and after the effect, but that's extra buttons that I have to press

Also, before anyone tries to get cute like me and render out EXR files instead of PSD, EXR files don't seem to work. PSD does. I don't know about other file formats.

[tcollier]

The blending mode for post effects render layer is add, your post effects should be on black.

[prodigiosovolcan]

Hello, I'm trying to use the post effect over a transparent background, but as there is no alpha channel into the post effect pass, I can't make it work properly in After Effects.

Is there a way to get the bloom&glare effect with transparent background so I can export that as a PNG with alpha?

Thanks

[jayroth2020]

Post Effects are additive; there is no alpha created for the post effect pass. The best you could do would be to use the pass as a luma matte in AE, though I doubt it would look natural.