I am new with Adobe After Effects. A composition with 3.33 minutes is after rendering to AVI 16.4 GB. How is this possible? How can I help this?
It is expected when you pick the default Lossless format for rendering. You need to learn about video formats, compression, rendering and a bunch more. I'd start here: Basic Workflow
more detail about Rick's answer:
FAQ: Why is my output file huge...?
Retrieving data ...