As discussed in the other development thread, SketchUp’s native animation export is rudimentary. It only animates the camera movements. It will not animate objects moving, nor materials changing.
Morisdov’s old “Proper Animation” was a proof of concept. But it was unfinished. It would need to write it’s own animation exporter.
I can understand his approach, but not sure as I’d myself implement the UI that way. But it’s something to think on …
Cross-Ref: Export animation problem