Uploaded December 2021 | Updated September 2026, 2 hours ago
Use the extract controller feature of DUIK Bassel to keep your timelines tight and your sanity in check.
Go watch the full video: youtu.be/NqQhEzSXFhs
Use the extract controller feature of DUIK Bassel to keep your timelines tight and your sanity in check.
Go watch the full video: youtu.be/NqQhEzSXFhs



![After Effects | Dynamic Lower Thirds with 1 easy expression
Self-resizing boxes are a time saver by eliminating the needs for extra keyframing. In this tutorial, I go over the After Effects expression sourceRectattime() which can help you create text boxes that resize with your text. It is the perfect expression when making lower thirds.
You can copy this Expression:
s=thisComp.layer(Name);
x=s.sourceRectAtTime(time-s.inPoint,true).width;
y=s.sourceRectAtTime(time-s.inPoint,true).height;
[x,y]
Replace Text with the name of your text layer and boom. Youre done.
My personal site: https://www.keyframeacademy.com/
Programs used:
Adobe Premiere CC
Adobe After Effects CC 2019
Camtasia 9 After Effects | Dynamic Lower Thirds with 1 easy expression](https://i.ytimg.com/vi/7Y01aMBr2Eo/mqdefault.jpg)






