This After Effects script lets you add and animate the trim path effect with a single click. If you've worked just a little bit with After Effects you know how many steps it takes to do that the traditional way. I created this script to avoid that. It has options to trim in, trim out or do both. You can also enable animation of the offset.
Watch my walk-through above to see how it works.
A handy little After Effects script to quickly and easily apply trim paths.