Answers.Body: <p>During the time range in which the dissolve occurs, split the clip on A, place that segment on a track above B, and apply a mask on A so that C shows through. You can do this by creating a mask to show the C region and then invert it.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-12-30T16:21:58.550Z
Answers.LastActivityDate: 2015-12-30T16:21:58.550Z
Answers.UserDisplayName: Gyan
Body: <p>Ok, I've got a question which is pretty hard to explain.</p>
  
  <p>I'm using Premiere Pro CC to produce a short movie.</p>
  
  <p>Here's a picture describing (or at least trying to) my set:
  <a href="https://i.sstatic.net/0Tg3l.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/0Tg3l.png" alt="Picture describing my set"></a></p>
  
  <p>"A" is the main track. "B" is the second track which I placed in the bottom right corner and "C" is an opacity mask on that track. On this track I've used <em>Ultra Key</em> to remove the background. I've also added a <em>Cross Dissolve</em> effect on "B".</p>
  
  <p>So here's the problem. During the cross dissolve the mask ("C") shows in the middle of screen ("D").</p>
  
  <p>Is this a bug or am I doing something wrong? How do I remove "D"?</p>
  
  <p>Thanks!</p>
  
Tags: <premiere><effects><mask>
Title: Mask "shadow" showing up in the middle of the scene
UserDisplayName: bjornlof
ThreadText: # Mask "shadow" showing up in the middle of the scene
  
  (Asked by: username_0 on 2015-12-30)
  
  Ok, I've got a question which is pretty hard to explain.
  
  I'm using Premiere Pro CC to produce a short movie.
  
  Here's a picture describing (or at least trying to) my set:
  [![Picture describing my set](https://i.sstatic.net/0Tg3l.png)](https://i.sstatic.net/0Tg3l.png)
  
  "A" is the main track. "B" is the second track which I placed in the bottom right corner and "C" is an opacity mask on that track. On this track I've used *Ultra Key* to remove the background. I've also added a *Cross Dissolve* effect on "B".
  
  So here's the problem. During the cross dissolve the mask ("C") shows in the middle of screen ("D").
  
  Is this a bug or am I doing something wrong? How do I remove "D"?
  
  Thanks!
  
  **Tags:** premiere, effects, mask
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-12-30. Score: 0 | Accepted answer
  
  During the time range in which the dissolve occurs, split the clip on A, place that segment on a track above B, and apply a mask on A so that C shows through. You can do this by creating a mask to show the C region and then invert it.
  
  
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