Sergiu Zboras asked how USD compression compares to .sog and .splat on my last post. I was curious, so I ran the test. Same 3DGS capture, four formats: .lcc 541MB → .ply 749MB → .usd 712MB → .sog 41MB USD sits close to PLY. .sog wins by a country mile for streaming and distribution. The value of USD is composability though. A layerable, referenceable, variant-capable scene object that lives natively in the same pipeline as every other piece of geometry in a professional production workflow. That's a different use case entirely. One honest caveat: I can't render it visually yet. The ParticleField3DGaussianSplat schema landed in OpenUSD 26.03 in March 2026 and the renderers haven't caught up. The pipeline works. The viewers are following. #RealityCapture #OpenUSD #SpatialData #GaussianSplatting #3DCapture

Thanks for providing the info. Very interesting. SOG indeed is crazy good at compressing so much data.

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