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rachelcenter
Legend
June 13, 2025

premiere is once again corrupting my AE renders by putting some weird outline around it

  • June 13, 2025
  • 4 replies
  • 314 views

premiere is once again corrupting my AE renders by putting some weird outline around it. I've written to the forums before about this issue but cant remember if i put it in the after effects forum or premiere forum but I render it out of After Effects and it looks fine and then a few minutes later i scrub back to it on my timeline and theres this crazy outline around it but if you bring the render into AE you dont see that crazy outline. Adobe has acknowledged this issue in the past and told me not to use a blue background but im not using any background. the glitch was on two separates files. both with alpha channels in them. One was a rotobrushed shot of a person.

in the past: if you re export the file from scratch from AE, you couldnt see the nasty outline any more until you hit quit on premiere and re open premiere and that nasty outline is back and then you'd have to re render in AE all over again to get it to go away again https://community.adobe.com/t5/premiere-pro-bugs/premiere-altering-my-ae-renders-to-include-odd-artifcating-in-the-background/idc-p/15204210/page/2#M46808 

 

mac os sequoia 15.5

premiere 25.2.3 (build 4)

afte effects 25.2.2 (build 2)

4 replies

R Neil Haugen
Legend
June 13, 2025

Ae works fine with both pre-multiplied alpha and not-pre-multiplied alpha.

 

If I recall correctly, Premeire only works correctly with pre-multipled alpha. Hence Ann's suggestion, as if that specific comp has non-pre-multiplied, it probably won't work in Premiere.

 

There's also a timeline setting something about compute in linear space or something like that. If turned off, it at times fixes odd things in comps.

Everyone's mileage always varies ...
rachelcenter
Legend
June 13, 2025
rachelcenter
Legend
June 13, 2025

 

Not the issue. this works fine every single day of the week for years. and issue only pops up once or twice a year

Ann Bens
Community Expert
Community Expert
June 13, 2025

Might want to check the alpha settings (there are a few) in Pr as well as Ae.