| ▲ | Fable created novel 4D splat format(adamraudonis.github.io) |
| 98 points by adamraudonis 9 hours ago | 31 comments |
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| ▲ | delichon 3 hours ago | parent | next [-] |
| A gaussian gif. Coming to porn sites soon. The file format name works for them. But imagine whole movies shot in this format. The fly-on-the-wall fantasy of movies, without being locked in place for the whole shot. Narrative possibilities like being able to examine just how close the Tyrannosaurus Rex is to your rear view mirror. Clues in a mystery only visible on rotation. Hidden bonus scenes. I hope this catches on just to be able to watch the evolution of cameras to capture it. |
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| ▲ | orbital-decay 2 hours ago | parent | next [-] | | >imagine whole movies shot in this format. The fly-on-the-wall fantasy of movies, without being locked in place for the whole shot. That would be terrible. Framing is the major expressive feature in cinematography, and any interactive format needs a lot more thought put into it than just having a free camera. Literally the worst of both worlds. Light field video streaming is a thing, however it's pretty niche. OTOY pioneered holographic codecs and light field videos with some degree of freedom and a sense of depth more than a decade ago. | | |
| ▲ | jayd16 2 hours ago | parent [-] | | Not terrible, per se, but not a movie. There are other formats that fit the task better like immersive theater and theater in the round. This has been extensively explored with VR and games, though. |
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| ▲ | andybak 2 hours ago | parent | prev | next [-] | | Ok but you're commenting on the general concept of animated gaussian splats. That's existed for a while and it's unrelated to what this actual post is about which is a new compression method. | | |
| ▲ | delichon 2 hours ago | parent [-] | | I suppose it's the difficulty in recording them rather than the file size that has kept them experimental. But that's not a problem for AI generated splats. GenAI sites could have a toggle from image to video to splat4d. |
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| ▲ | jfim an hour ago | parent | prev [-] | | That already exists though. I believe Braindance VR uses a rig with a couple dozen cameras to capture the same scene from multiple viewpoints then converts it to a gaussian splat that can be walked around. |
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| ▲ | chmod775 an hour ago | parent | prev | next [-] |
| The application is cool, but there is little novelty here. All of the employed techniques are well-established. I suggest removing "novel" from the title unless you wish to seriously disappoint some people. |
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| ▲ | goosethe an hour ago | parent | prev | next [-] |
| I feel like I did this one already: https://github.com/seanwevans/4splat |
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| ▲ | ACCount37 an hour ago | parent | prev | next [-] |
| Does switching scenes in the demo work for anyone? There are what, 3 hidden panels in the HTML there? But none of them have a "switch scenes" button. |
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| ▲ | Lucasoato 4 hours ago | parent | prev | next [-] |
| Doesn’t with for me, iOS Safari :/ |
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| ▲ | nomel 4 hours ago | parent | next [-] | | Works on my old iPhone. The video is a splat. Click the interact button to change perspective. | | | |
| ▲ | oldsecondhand 2 hours ago | parent | prev | next [-] | | Me neither on Chrome on Win10. "WEBGPU initialization failed". | |
| ▲ | skybrian 2 hours ago | parent | prev [-] | | Works on my iPad using Chrome or Safari. |
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| ▲ | reassess_blind an hour ago | parent | prev | next [-] |
| Whats the 4 in the "4D" here? A layman like me thinks this looks 3D. |
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| ▲ | jasonjmcghee an hour ago | parent [-] | | time | | |
| ▲ | reassess_blind an hour ago | parent [-] | | Why is it we don't call videogames "4D" if they also operate through time? | | |
| ▲ | dietr1ch an hour ago | parent | next [-] | | I guess if moving through time other than forward like normal it'd justify calling time a new dimension on which you can play on. Otherwise, we just focus on the 3D space they represent and take time for granted | |
| ▲ | dullcrisp an hour ago | parent | prev | next [-] | | Animations are four-dimensional. Colored animations are seven-dimensional. More if they include surface normals or lighting information. Simple. | |
| ▲ | jasonjmcghee an hour ago | parent | prev [-] | | 3D Gaussian splats are still images of 3D space / photogrammetry So I'm guessing it came from representing the additional dimension |
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| ▲ | adamraudonis 9 hours ago | parent | prev | next [-] |
| See repo for prompt. Feel free to contribute to format or benchmarking. MIT Open Source. |
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| ▲ | diimdeep 5 hours ago | parent [-] | | Publish full session md, you can export them with `uvx claude-code-log@latest --tui` | | |
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| ▲ | mistahchris 3 hours ago | parent | prev | next [-] |
| wow… this is seriously cool. |
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| ▲ | xiaoyin903 8 hours ago | parent | prev | next [-] |
| https://adamraudonis.github.io/splats4D/ |
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| ▲ | gcr 3 hours ago | parent | prev [-] |
| Something’s way off with these numbers. The page says it encodes video at 640MB/s which is quite large even for 4D data and doesn’t match the filesize of the demo splat (7.4MB / 2sec, or ≈3.4MB/s). In fact they say the raw file size of the demo splat was only 427MB, so maybe the 640MB/s was a statement about encode speed? Why write it that way instead of “this demo splat was encoded in 0.6sec” or even just “the time to produce the original splat took longer than the time to encode this video format”? |
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| ▲ | danielheath 2 hours ago | parent [-] | | “encodes video at 640MB/s” is the common way for codec authors to talk about performance |
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