OTOY Forums

Hi,

So I've posted about this before and I've seen a couple other threads about this, but nobody has been able to help. With my Z Passes, I'm having this horrendous black line that appears around the edges of my renders when I bring it into AE.

I'm going to try and be as clear as I can here. I'm using multilayered 16-bit EXR files for my beauty and passes. Here are my render settings:
However once I bring my EXR's into After Effects and use the Extractor to extract my passes, my Z pass has this nasty black line around the edge of the alpha. I put this pass into its own comp so that I can put a WHITE SOLID behind it so I have a clean Black to White Z Pass. NOTE: I can fix this by using the After Effects 'Remove Color Matting' effect, however this doesn't work all the time and especially with a more complicated Depth Pass that I'm using on a current project. Just for this test scene however, you can see the issue. Below are pictures of my Beauty and Z Pass in After Effects.
At first I thought this might be an issue with EXRs because you cannot interpret footage and change the alpha from straight or pre-multiplied in AE for EXR. (Please correct me if I'm wrong here). So naturally I go and try .TIFFs and PNGs. I feel like I've tried every combination of 16-bit vs 32-bit, sRGB vs Linear, Tonemapped vs. Linear. Checking pre-multiplied in the camera imager, etc.

One thing that I've found is if I set my Z pass Sampling Mode to 'Non-distributed without pixel filtering' the black line goes away, but the Z pass gets much sharper/dirtier as seen in the photo below.
However when I do this, my Frischluft Depth of Field registers those little white pixels and looks like this. I've added the red background just so you can see.
Luckily I've found a workaround for this where I can blur the depth field with Gaussian blur by an amount of 5 and those lines seem to disappear, but I shouldn't have to do this. There should be a way to get a clean render regardless. Any feedback would be greatly appreciated. Thanks.

Also note, this has happened in every version of Octane I've ever used, including 4, which is what I tried just now with the hope of it being solved. Thanks!

anyone?

nobody?

First install ProEXR 2 from fnord for after effects. Make sure that you follow exactly how it's being installed!

Then open this thread viewtopic.php?f=30&t=69846

Read through it, watch the video linked in the first post, download the files from the Dropbox, then read my comments underneath it and download my project there that I linked.

In after effects after you rendered out your passes using the render settings from my file (tick alpha on in the octane settings and in the c4d export settings, but do NOT tick straight alpha!) use the alpha of the beauty pass as an alpha matte for your depth pass! After you used the exposure effect to get the z depth pass into a usable range in AE, place a white solid behind behind the z pass. Then use this precomp to drive your DoF in Frischluft