• Adobe After Effects Expressions

  AE Script to emulate Drag Audio on New Composition icon To create composition

  Posted by John Gate on September 9, 2020 at 5:50 pm

  Hi there,

  If we drag an audio clip from project panel and drop on composition icon, then it creates a composition with audio in it.

  How can i get the same behavour using a script?

  Please advise

  Walter Soyka replied 5 years, 8 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Walter Soyka

  September 10, 2020 at 4:25 am

  Yes, and it’s pretty straightforward if you’re familiar with scripting. Here’s some commented code:

  // create an undo group so we can Control+Z this all away
  app.beginUndoGroup("Create new comp with first selected footage");
  // assume the first selected item in the project panel is our audio footage.
  // in real life, you'd already have an object for this.
  // note that I'm not doing any error checking here, so things will go wrong if you don't have a valid selection
  var audioTrack = app.project.selection[0];
  // create a new comp named after our audio track, 1920px wide, 1080px high, square pixels, at the length of the audio track, and at 29.97fps
  var newComp = app.project.items.addComp("Comp " + audioTrack.name, 1920, 1080, 1, audioTrack.duration, 30000/1001);
  // add the audio footage as a layer in the new comp
  var newAudioLayer = newComp.layers.add(audioTrack);
  // close the undo group, that's all, folks!
  app.endUndoGroup();

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