3D World

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 229.6 Hz, 74 cents sharp of A3, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap to fly the video's path; drag to look around. Show the original plays the flat video beside it.

A video is a string of photos from a moving camera. If the scene stands still, each frame shows it from a slightly different place, and that is enough to rebuild it in 3D. This splash picks the sharpest frames of your stretch, finds the same small details in many of them and works out where the camera was for each one. That is structure from motion. Then it trains 3D Gaussian splats: starting from those points, it nudges each splat's place, size, shape and color until the scene, seen from each camera, looks like that frame.

It all runs on your device's graphics card, and nothing is uploaded. Film by walking slowly around an object or through a place, so the camera moves sideways: 10 to 40 seconds, steady, with texture. Turning on the spot, a tripod, blank walls, sky, water and blur give it nothing to match. On a phone, the phone-safe setting keeps it quick and cool.

Show the original plays the sample's flat video in step with Replay flight.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.