Arcturus Vision Camera for Steam Frame: 5K Stereo Capture and Windows Gaussian Splat Limits

A small camera with a specific compatibility boundary​

Arcturus’s product listing prices the module at $149. Its support documentation describes hot-plug installation: attach the camera to the designated port on Steam Frame. Compatibility is exclusive to that headset; this is not a transferable upgrade for a Quest, PICO or Valve Index.

Antunes reports that color passthrough activates automatically after attachment. Arcturus independently documents the mounting process, although its support page does not establish the report’s precise under-30-second setup claim. Plug-and-play is the supported expectation; a stopwatch guarantee is another matter.

The company also attributes its Index heritage to its founding team’s earlier work at Occipital, where it says they built a color 3D passthrough system with Valve in 2019. That is company-described history, not evidence that the new accessory works with Index.

What “5K” actually means​

Arcturus specifies two 32-megapixel Sony RGB sensors, spaced 64 mm apart, in a module weighing less than 10 grams. Its video modes are more precise than the headline shorthand suggests:

The company lists 10-bit HLG HDR and 8-bit SDR recording. These are manufacturer specifications, not independent image-quality measurements.

Importantly, recording frame rate and passthrough refresh rate are different specifications. Arcturus lists default passthrough at 60 fps, with special configurations reaching up to 72 Hz at 5K or 144 Hz at 2.5K. Those figures do not mean the camera records 5K video at 144 fps.

Arcturus’s comparisons with Apple Vision Pro, Meta Quest 3 and PICO 4 Ultra are also vendor comparisons rather than neutral benchmarks. Its table mixes binocular field-of-view figures for its own camera with per-eye figures for competitors. That qualification matters before declaring a winner from the largest numbers alone.

Windows gets transfers and conversion—not full reconstruction​

Arcturus documents three distinct software roles:

• Arcturus Vision Camera: recording and playback on Steam Frame.
• Arcturus Vision Sync: transferring recordings and converting video on Windows or Mac.
• Arcturus Vision Gaussian XR: viewing compatible reconstructed 3D scenes on the headset.

Sync’s Windows support includes conversion for Apple Vision Pro, Meta Quest, standard 3D players and 2D video. That expands the practical workflow beyond the Mac-only conversion wording in Antunes’s report. However, Arcturus explicitly says its Gaussian-reconstruction scripts are not yet supported on Windows. Desktop video conversion should not be mistaken for desktop scene reconstruction.

The documented reconstruction routes use Spirula Studio on Apple Silicon Mac or Linux, or LichtFeld Studio on Linux with supported NVIDIA hardware. Arcturus recommends 30 fps capture to conserve storage when preparing footage for splatting. Both SDR and HDR recordings can feed the process, but the resulting Gaussian scenes currently output in SDR.

Gaussian XR is a viewer, not a one-click scanner​

Steam lists Arcturus Vision Gaussian XR as released on September 28, 2026, with free access. It includes eight example scenes and lets users move through them or change their scale. Its description explains Gaussian splatting as reconstruction of an interactive 3D environment from a collection of images.

For existing compatible scenes, the documented import procedure is straightforward:

1. Obtain a compatible PLY or SOG scene.
2. Transfer it into Documents/GaussianXR on Steam Frame.
3. Open Gaussian XR, which automatically discovers compatible files in that folder.

The practical distinction is clear: the camera captures source footage, desktop reconstruction creates the scene, and Gaussian XR displays it. Arcturus offers an interesting expansion of Steam Frame’s capabilities, but Windows-only creators should plan around that missing reconstruction support—not assume a tiny camera also contains an entire production pipeline.