Answers.Body: <p>If you mean that you have two compositions in one main composition, and you want both to show their contents on <strong>top</strong> of each other, then I can help you.</p>
  
  <p>Make sure that you click on "Toggle Switches / Modes",</p>
  
  <p><img src="https://i.sstatic.net/92Bco.png" alt="enter image description here"></p>
  
  <p>so that you have the "Mode" option available.</p>
  
  <p><img src="https://i.sstatic.net/51fnT.png" alt="enter image description here"></p>
  
  <p>Now set the top composition to either "Screen", "Add", or "Lighten".</p>
  
  <p><img src="https://i.sstatic.net/Ljtpp.png" alt="enter image description here"></p>
  
  <p>Make sure that the top composition has at least some transparent part in it, if it's just a full solid black layer, nothing's going to show through be default, unless you lower the opacity down.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-06-14T06:36:36.063Z
Answers.LastActivityDate: 2015-06-14T06:36:36.063Z
Answers.UserDisplayName: Shane Smiskol
Body: <p>I want to merge two comps in after effects so, when I play contents from both layers shows.</p>
  
  <p>At the current time the upper composition dont allow the lower composition to display its contents.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-06-13T16:52:29.600Z
Comments.Text: Welcome Ali :) I'd like to help, but I don't really understand your issue. Just to get it right: You want to create 1 comp by 2 other comps to get all in one? If yes, make sure the comp above has an alpha channel (transparency). Maybe you could add a screenshot... Anyway, enjoy video.se!
Comments.UserDisplayName: p2or
Tags: <after-effects>
Title: Merging two Comps, Adobe After Effects
UserDisplayName: Ali Sajid
ThreadText: # Merging two Comps, Adobe After Effects
  
  (Asked by: username_0 on 2015-06-13)
  
  I want to merge two comps in after effects so, when I play contents from both layers shows.
  
  At the current time the upper composition dont allow the lower composition to display its contents.
  
  **Tags:** after-effects
  
  > **Comments:**
  > **username_1**: Welcome Ali :) I'd like to help, but I don't really understand your issue. Just to get it right: You want to create 1 comp by 2 other comps to get all in one? If yes, make sure the comp above has an alpha channel (transparency). Maybe you could add a screenshot... Anyway, enjoy video.se!  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2015-06-14. Score: 1 | Accepted answer
  
  If you mean that you have two compositions in one main composition, and you want both to show their contents on **top** of each other, then I can help you.
  
  Make sure that you click on "Toggle Switches / Modes",
  
  ![enter image description here](https://i.sstatic.net/92Bco.png)
  
  so that you have the "Mode" option available.
  
  ![enter image description here](https://i.sstatic.net/51fnT.png)
  
  Now set the top composition to either "Screen", "Add", or "Lighten".
  
  ![enter image description here](https://i.sstatic.net/Ljtpp.png)
  
  Make sure that the top composition has at least some transparent part in it, if it's just a full solid black layer, nothing's going to show through be default, unless you lower the opacity down.
  
  
  ---
  
  