I'm not clear how to build a keyframe timeline or bezier graph for property tweening, nor am I sure whether shape tweening is possible with CSS or SVG.
Granted, Scene.js seems oriented towards short animations.
Building a hypermedia studio, even with Scene.js as a component, that could produce something as elaborate as Homestar Runner would need considerable effort.
The idea here is basically an open source, web standards-based alternative to Adobe Animate.
https://createjs.com/
I'm not clear how to build a keyframe timeline or bezier graph for property tweening, nor am I sure whether shape tweening is possible with CSS or SVG.