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Activity Forums Adobe After Effects Expressions Simple scale expression for zooming in on photos

  • Dan Ebberts

    October 24, 2007 at 11:22 pm

    No global variables, but you can use Slider Controls to control the values. You could just apply a Slider Control to a null layer, pick whip from your expression to the slider to get the syntax right, and then control all your values with the slider.

    Dan

  • Bill Russell

    October 25, 2007 at 2:12 am

    Score. That’s working well. I created null sliders for all three variable, for end, start, and time. Several small steps forward in comprehension. Thanks.

    “THE LOST SKELETON OF CADAVRA”

    And more…

  • Jonathan Bullock

    September 1, 2008 at 11:32 am

    I’ve been using the following expression to scale down a video clip from it’s in point

    startScale = 100; // percent of Scale at start
    endScale = 60; // percent of Scale at end
    scaleUpTime = 3; // time to scale up from inPoint in seconds

    s = ease(time,inPoint,inPoint+scaleUpTime,startScale,endScale);
    [s,s]

    However is it possible to adapt this so that I can the scale back up to 100% 3 seconds before the out point of the clip.

    Thanks in advance,

    Jon

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