Glad you liked our work!

1) Around 100-150 if memory serves. This scene is part of the mip-NeRF 360 benchmark, which you can download from the corresponding project website: https://jonbarron.info/mipnerf360/

2) Between 12 and 48 hours, depending on the scene. We train on 8x V100s or 16x A100s.

3) The time for preparing assets is included in 2). I don't have a breakdown for you, but it's something like 50/50.

4) Nope! A keen hacker might be able to do this themselves by editing the JavaScript code. Open your browser's DevTools and have a look -- the code is all there!