4DV.ai

4DV.ai builds 4D video creation, playback and editing tools based on Gaussian Splatting. Its output is dynamic 4D Gaussian Splatting, volumetric video in which every frame is a splat scene, so a viewer can move around the action rather than watch it from a fixed camera. Its SIGGRAPH 2025 Real-Time Live demo was credited to Infinite Studio, and its CEO is Jiaming Sun. Its website first drew wide attention in 2025 after it was found through a link on the FreeTimeGS research project page, and the interest that followed brought a wave of claims about dynamic splatting, including the false one that it can be captured with a single camera.

A 4DV live demo won Best in Show at SIGGRAPH 2025 Real-Time Live, as voted by the audience. Sun showed dynamic captures with their individual Gaussians exposed, and Zhi Wang showed a Blender plugin rendering dynamic splats in real time in Eevee and fully ray traced in Cycles, with instancing of captures and depth of field and focal plane changes made after capture. The team then brought a dynamic capture into Unreal Engine through a second plugin. Sun said on stage that the company aims to let the general public capture its own 4D video.

4DV.ai, Dell Technologies and Radiancefields.com launched a complete 4DGS video that premiered at SIGGRAPH 2026. The piece runs 11.5 minutes, every frame of it is 4D Gaussian Splatting with no 2D elements, and attendees could watch it in WebXR or in VR through a Quest app. Dell Technologies and NVIDIA provided the resources behind it.

4DV.ai's 4DGS also carries narrative work. Empire At Sea, a piece by Peter Flaherty, uses 4DV.ai's 4D Gaussian Splatting for its volumetric characters, is built in Unity, and premiered at Venice Immersive 2026 as an installation for ten simultaneous viewers on Apple Vision Pro.

4DV.ai publishes no pricing, licence terms or hardware requirements on its website, and enquiries go through a contact form there.