• Adobe After Effects

  ExtendScript, How to add opacity keyframe to any selected layer at current time?

  Posted by Mohd Faizan on October 13, 2020 at 7:31 pm

  This is what I tried, but not working :/
  

  var myLayer = app.project.item(index).layer(index).propertySpec;
  var myProperty = myLayer.opacity;
  myProperty.setValue(50);

  Mohd Faizan replied 5 years, 7 months ago 2 Members · 3 Replies
• 3 Replies

• 

  Walter Soyka

  October 13, 2020 at 7:49 pm

  You don’t need the .propertySpec business, and if you want to add keyframes, you need to uset setValueAtTime(). Here’s some sample code to set an opacity keyframe at 50% on the first layer of the first item in the project at its current time:

  var myLayer = app.project.item(1).layer(1);
  var myProperty = myLayer.opacity;
  myProperty.setValueAtTime(myLayer.containingComp.time, 50);
• 

  Mohd Faizan

  October 13, 2020 at 7:59 pm

  Thankyou so much!
  It is working fine for 1st layer, but I wanted it to applied on selected layer(s).
• 

  Mohd Faizan

  October 13, 2020 at 8:25 pm

  var myLayers = app.project.activeItem.selectedLayers;
      if (myLayers.length > 0) {
          for (var i = 0; i < myLayers.length; i++) {
          var myProperty = myLayers[i].opacity;
          myProperty.setValueAtTime(myLayers[i].containingComp.time, 0);}
      } 
      else {alert("No layers selected.");}

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