Creative Communities of the World Forums

The peer to peer support community for media production professionals.

Activity Forums Adobe After Effects Thin black pixel line when exporting (looks like a thin drop shadow)

  • Andy Kiernan

    August 7, 2023 at 2:57 pm

    is this when you make AE shapes or illustrator shapes? If AE, maybe you have stroke enabled and its just a very small value?

  • Alessio Rattazzi

    August 7, 2023 at 3:52 pm

    Hi Andy, thanks for you time!
    Actually is doing it with both; illustrator and After Effects shapes. here I tried to create a shape from scratch in after effects and make sure it has no stroke assigned. Yet there are still black borders in export (right split screen)

  • Andy Kiernan

    August 7, 2023 at 3:59 pm

    i see, could you upload an ae file? does it still occur when rendered to ProRes 4444 or similar?

  • John Cuevas

    August 7, 2023 at 4:43 pm

    What are your export settings & original comp size? Are you compressing the file? Is there a background or are these shapes being exported with an alpha channel over transparency?

  • Alessio Rattazzi

    August 8, 2023 at 12:05 pm

    dear Andy and John

    Thanks a lot for your time. Here is the After Effects file (it gives the problem when exporting even if there is no motion), the exported mp4 and the export settings.

    Thank you very much Alessio

  • John Cuevas

    August 8, 2023 at 2:23 pm

    It’s the MP4 default render from AE that’s causing your issue. I could only get the result you are getting by compressing to MP4. Try rendering to a quicktime movie and using the ProRes 4444 codec and see if that fixes your issue.

  • Alessio Rattazzi

    August 8, 2023 at 2:38 pm

    Thank you very much, these settings solve the problem! The only thing is the file weight, what format would you recommend for a lowres export or for social media if mp4 causes the problem?

    thanks again

    best regards


  • Andy Kiernan

    August 8, 2023 at 2:56 pm

    nice work John. Alessio, you should render from AE at Pro Res (my preference), and use media encoder or similar to compress to MP4, the AE MP4 is for quick outputs not finals. But happy you have been given a solution!

  • Alessio Rattazzi

    August 8, 2023 at 4:07 pm

    Actually, even if I export with John’s settings and then convert the file to mp4 with media encoder, it still generates the black line. Never mind, the main problem is solved. Now I’ll do some testing to find a satisfactory lowres 🙂

    Thanks a lot for your time and help!


  • Eric Santiago

    August 11, 2023 at 3:45 pm

    It’s all in the compression settings.

    Basically aliasing is the issue.

We use anonymous cookies to give you the best experience we can.
Our Privacy policy | GDPR Policy