Hi all,
The preface
I'm having a serious problem while exporting from After Effects 15 (cc18). Both on my 2013 Mac Pro on High Sierra as on my MacBook Pro (2017). Both have AMD graphics cards. When I render from the render queue, from any project, I get white lines on some frames. A single pixel, horizontal and/or vertical. You can see it on the desk on the right. Is anyone else experiencing this, because support says they haven't seen this before. When I Google or search these forums, I can't seem to find any info on it either.
![Schermafbeelding 2017-12-21 om 18.11.18.png]()
I run rubberhose 2 and motion 2 plug-ins on both setups, but they worked fine in cc17. I recently upgraded the mac Pro to High Sierra, because Adobe told me too. I think I was still on Yosemite before and couldn't install cc18 without upgrading.
The problem
As said, when I render from the render queue, from any project, I get white lines on some frames. A single pixel, horizontal and/or vertical.
I contacted Adobe, because this pretty much destroys my workflow: I have to check every frame of the rendered file and fix these frames manually in Photoshop and Premiere:
![Schermafbeelding 2017-12-21 om 14.59.25.png]()
Support
They told me it's an Apple problem, caused by the drivers of Open CL / Metal in High Sierra. This is weird, because it's the same under Sierra with cc17 and it didn't occur in cc17 under Sierra.
Their solution: render via Media Encoder, using the software renderer. At first this seemed to work. I actually did one render that was fine. The next day, it simply didn't work anymore.
This must be some kind of bug. I'm experiencing it under both Sierra and High Sierra with CC18 (AE15).
The "solution"
To perform the ultimate test. I rendered the same project with cc17 ont the MBpro and it has no white lines whatsoever. In my logic it would be safe to assume that it is an Adobe problem and is'nt driver related after all.
I hope the problems don't occur anymore after I roll back to cc17 on both machines. It's a shame though and I feel let down. This has cost me many hours of troubleshooting and testing in a week with tight deadlines. That's of course a lot of frustration that shouldn't have happened.
I hope this discussion temporarily helps other people having troubles with white horizontal and verticla one pixel lines in their After Effects CC 2018 renders.
If you have any more info or maybe fixes please do reach out!
Thanks,
Pieter