Comment by cubefox

On last SIGGRAPH there was actually a company which makes dynamic 3D Gaussian splatting videos now rather than static scenes:

https://www.youtube.com/live/ucRukZM0d1s?t=1h1m50s

https://zju3dv.github.io/freetimegs/

https://www.4dv.ai/

The videos can be played back in real-time, though they require multiple cameras to capture.