vr180: an immersive 180 degree stereoscopic hemisphere in WebXR, with a draggable rectilinear fallback on non-XR browsers.
plane: a flat stereoscopic video plane in WebXR, with a normal flat left-eye fallback on non-XR browsers.

How to use it

Build the player first, then host the generated vr180player/ directory on your CDN and include the module script. The script automatically loads its matching CSS file from the same folder, and it imports its helper modules with relative module paths.

<div data-vr-web-player data-projection="vr180">
	<video poster="poster.jpg" title="Demo Video" crossorigin="anonymous" playsinline preload="metadata">
		<source src="sbs-video.mp4" type="video/mp4">
	</video>
</div>

<script type="module" src="https://cdn.example.com/vr180player/vr180-player.js"></script>

Use data-projection="plane" for flat 3D video on a rectangular plane:

<div data-vr-web-player data-projection="plane">
	<video poster="poster.jpg" title="Demo Video" crossorigin="anonymous" playsinline preload="metadata">
		<source src="sbs-video.mp4" type="video/mp4">
	</video>
</div>

Only one player is supported per page in this version. The player logs a clear console message and does not initialize if no [data-vr-web-player] container is found, if multiple containers are found, if the container has no video, or if data-projection is not vr180 or plane.

Video format

This version supports 2:1 side-by-side video using H.264 or HEVC in an mp4 file. It does not support over-under, MV-HEVC, APMP, or .aivu.

How it works

When the page loads, the video is embedded normally with a play button over the poster frame. When the user clicks play, the player checks for navigator.xr and immersive-vr support.

In WebXR, vr180 maps the left and right halves of the SBS video onto the matching eyes of a 180 degree sphere.
In WebXR, plane maps the left and right halves onto the matching eyes of a floating 16:9 video plane.
Outside WebXR, both modes render only the left half of the SBS video so viewers do not see the raw double image.
Control icons are embedded from Lucide SVG definitions, so no PNG icon assets are required.

Demo

Run npm run build, then open this repository's index.html through a local web server and switch data-projection between vr180 and plane to test both modes.

Development

The player source is TypeScript in src/vr180player/. Generated JavaScript files in vr180player/ are ignored by git so CI/CD can build and publish them from source.

npm install
npm run build

Edit the TypeScript source files rather than generated JavaScript. A typical CI/CD publish step should run npm ci, npm run build, then publish vr180player/ with its generated .js files and CSS.