• Adobe After Effects

  Marker duration triggers scale

  Posted by Jean Livenais on October 2, 2022 at 3:40 pm

  Hi,

  I d’like to zoom a video multiples times during the duration of markers along the timeline.

  One zoom at 120% and another 140%.

  When the markers are over the scale goes back to 100%

  It is not necessary to use linear or ease transition.

  Here is an example.

  Thank you for your help.

  

  ZOOM-EXAMPLE.png 19 KB Image File - Click to view

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  Jean Livenais replied 3 years, 10 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Filip Vandueren

  October 3, 2022 at 11:43 am

  Hi Jean,

  try this as an expression for scale of the layer:

  (function getZoomFromMarker() {
      if (!marker.numKeys) return [100, 100];
      nk = marker.nearestKey(time);
      nki = nk.time > time ? nk.index - 1 : nk.index;
      if (nki == 0) return [100, 100];
      m = marker.key(nki);
      markerEndTime = m.time + m.duration;
      if (time > markerEndTime) return [100, 100];
      zoomFactor = parseFloat(m.comment.split(" ")[1]);
      return [zoomFactor, zoomFactor];;
  })();
• 

  Jean Livenais

  October 5, 2022 at 5:28 pm

  Thank you Filip, it works perfectly!

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