Answers.Body: <p>Have a look at how AE is interpreting the footage (right-click it in the project and look for <strong>Interpret Footage>Main</strong>). Specifically look at how it is interpreting the alpha channel, it could be interpreting a straight alpha channel as pre-multiplied or the alpha channel might be pre-multiplied with another colour instead of black). Have a go at switching between alpha modes, or try setting the pre-multiplied colour to white instead of black.</p>
  
  <p>If that fails you'll need to de-fringe the layer in your comp. A simple choker effect would do the trick.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-02-28T01:00:22.530Z
Answers.LastActivityDate: 2017-02-28T01:00:22.530Z
Answers.UserDisplayName: stib
Body: <p>I have a composition of a video and a 3d object on it, coming from CINEMA 4D. There is a ~1 pixel wide glowing artefact around the edge of the imported 3d object. What can be the reason and how can I fix it?</p>
  
  <p><a href="https://i.sstatic.net/vpO09.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/vpO09.jpg" alt="the mattress is the 3D object, the light edge is clearly visible, especially on the lower right edge"></a></p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-02-27T18:42:44.383Z
Comments.Text: On the screenshot, the preview quality is set to draft, but the final quality has the same issue.
Comments.UserDisplayName: Mkoch
Tags: <after-effects><3d><cinema4d>
Title: 3D object from CINEMA4D has glowing edge in After Effect
UserDisplayName: Mkoch
ThreadText: # 3D object from CINEMA4D has glowing edge in After Effect
  
  (Asked by: username_0 on 2017-02-27)
  
  I have a composition of a video and a 3d object on it, coming from CINEMA 4D. There is a ~1 pixel wide glowing artefact around the edge of the imported 3d object. What can be the reason and how can I fix it?
  
  [![the mattress is the 3D object, the light edge is clearly visible, especially on the lower right edge](https://i.sstatic.net/vpO09.jpg)](https://i.sstatic.net/vpO09.jpg)
  
  **Tags:** after-effects, 3d, cinema4d
  
  > **Comments:**
  > **username_0**: On the screenshot, the preview quality is set to draft, but the final quality has the same issue.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2017-02-28. Score: 2 | Accepted answer
  
  Have a look at how AE is interpreting the footage (right-click it in the project and look for **Interpret Footage>Main**). Specifically look at how it is interpreting the alpha channel, it could be interpreting a straight alpha channel as pre-multiplied or the alpha channel might be pre-multiplied with another colour instead of black). Have a go at switching between alpha modes, or try setting the pre-multiplied colour to white instead of black.
  
  If that fails you'll need to de-fringe the layer in your comp. A simple choker effect would do the trick.
  
  
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