• Adobe After Effects Expressions

  Command to select and permanently smooth layer keyframes?

  Posted by Nick Fox-gieg on May 7, 2012 at 12:40 am

  I’ve got a script (autogenerated from a Java app) that generates hundreds of layers and a position keyframe for each frame of each layer. I’d like to be able to get rid of unnecessary keyframes by selecting all of them and applying a permanent smooth effect, like you can get from the Smoother palette in the GUI. Does anybody know the command for this?

  Thanks!
  Nick Fox-Gieg

  fox-gieg.com

  var solid = myComp.layers.addSolid([1.0, 1.0, 0], "my square", 50, 50, 1);
solid.motionBlur = true;
var myEffect = solid.property("Effects").addProperty("Fast Blur")("Blurriness").setValue(61);

  var p = solid.property("position");

  p.setValueAtTime(0.0, [ 727.9377, 549.09705]);
  p.setValueAtTime(0.041666668, [ 758.467, 579.49365]);
  p.setValueAtTime(0.083333336, [ 789.2609, 610.0887]);
  p.setValueAtTime(0.125, [ 820.3195, 640.88196]);
  p.setValueAtTime(0.16666667, [ 851.64276, 671.87366]);

  //...etc

  Dan Fredley replied 14 years, 1 month ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Fredley

  June 12, 2012 at 6:08 am

  You can set an expression on the property:
  p.expression = """smooth(.2,5)""";
p.selected = true;
app.executeCommand(app.findMenuCommandId("Convert Expression to Keyframes")); //technically unsupported scripting feature
p.selected = false;

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