Uploaded January 2019 | Updated September 2026, 2 hours ago

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In this tutorial we jump into after effects to learn how to make boxes that follow the size of your text is super easy to do. This technique uses the expression sourceRectattime(). This expression is super useful and can be used in many different ways!

Expression used in this video:
s=thisComp.layer("name");
x=s.sourceRectAtTime().width;
y=s.sourceRectAtTime().height;
[x,y]

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