This is a side-by-side (SBS) stereoscopic test video, served via native HLS
(.m3u8) so the texture stays live inside an immersive WebXR session on
visionOS. The left and right halves carry a small horizontal parallax.
In Safari on Apple Vision Pro: enable the Stereo Theater extension for this site, let the video play, then tap “⛶ Watch in 3D” → Start 3D. Toggle Swap eyes under ⚙ if depth looks inverted.