• Adobe After Effects Expressions

  Parent animation timing to markers

  Posted by John Howes on November 9, 2016 at 1:27 am

  When I ask this question via google, I often get some variation of the expression below.

  This is a nice code and all but not what I’m looking for. I want something more like what the mister horse animation composer does with it’s animation presets
  Being able to adjust the timing with markers. not just where something begins but the duration of the animation as well. not using sliders but using markers. If anyone knows how to do this I’d be very grateful.

  Example of what I mean by the mister horse presets. in this video at 1:20
  https://youtu.be/PywvZOy-OaQ?t=72

  // Keyframe your animation, starting on frame 0
// This property will animate at every marker on this layer

  // If the property has no keyframes, the value at frame 0 is output
  if (thisProperty.numKeys == 0) { t = 0; }

  // Find the previous marker from current time
  else {
  n = 0;
  if (marker.numKeys > 0){
  n = marker.nearestKey(time).index;
  if (marker.key(n).time > time){ n--;}
  }

  // If there is no previous marker, the value at frame 0 is output
  if (n == 0){ t = 0; }

  // Calculate t from elapsed time since the last keyframe
else{
m = marker.key(n);
t = time - m.time;
}
}
valueAtTime(t)

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  John Howes replied 9 years, 8 months ago 1 Member · 0 Replies
• 0 Replies

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