What's the current best open source version of this kind of thing? Awkward to get running and a UI that's a half working notebook is fine, but are there decent models/setups to go from video/images to point cloud and renderable scene (with Gaussian splatting).

I believe they are using the original Gaussian Splatting code from Inria under the hood: https://github.com/graphdeco-inria/gaussian-splatting