• Adobe After Effects Expressions

  Control Duration of Pre Comp with an Expression

  Posted by Andrew Barber on October 9, 2014 at 4:15 pm

  Hi,

  I am creating a lower third for mastering. I am able to set the in and out points with sliders and because they can be variable lengths I have set the middle as a still. I need an expression that would allow me to adjust the duration of this middle section with a slider. I can then link the subsequent versions to this.

  Ideally I would use a slider to link each versions ‘stretch’ tool to adjust the length but obviously this is not key frame-able.

  Any help would be very much appreciated.

  cheers
  Andrew

  Andrew Barber replied 11 years, 11 months ago 1 Member · 0 Replies
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