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I'm trying to render a video from Adobe Media Encoder, created in After Effects. We first had this problem is a larger file, so I reduced it down to a simple file the results of which can be seen in this gif.

What the video comes out looking like

Any thoughts as to why this might be happening?

Specs:

  • Media Encoder, 2015.4 Release, Build 10.4.0.26 (latest)
  • After Effects, 2015.3 Release, Version 13.8.1.38 (latest)
  • MacBook Pro Retina 15-in, Mid-2014, OS X 10.11.6 (latest) - 16 GB Ram, 2.5 GHZ i7
  • Source Comp; px 1.0, 29.97 fps, Progressive
  • Output, H.264 Match Source, High bitrate (VBR 1 pass)
  • Also exported as PNG sequence but the corruption was still there
  • Turn off CUDA rendering, as per here. – Gyan Aug 29 '16 at 18:13
  • @Mulvya that was it! Thanks a bunch. You want to put that in an answer and I'll accept it? – johnkeese Aug 29 '16 at 20:11
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As answered in this Q/A, the problem looks to be caused by the use of the CUDA renderer ("Mercury"). The solution is to switch to CPU-only rendering.

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    This was it. In case anyone else can't find it it's in Media Encoder > Preferences. Change Video Rendering to “Mercury Playback Engine Software Only" – johnkeese Aug 29 '16 at 20:52

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