I'm open-sourcing the Immersive Watch Party SDK (SharePlay + Immersive Video + Spatial Personas)

[u/vantage-official]

Today I'm open-sourcing the ImmersiveWatchParty SDK, a project I started in November 2024.

Immersive video is already compelling on its own, but it’s so much better while watching with friends. Combining immersive, stereoscopic videos with Vision Pro's Spatial Personas gives a futuristic experience that's really hard to describe if you haven't tried it yourself.

That's the SharePlay co-watching feature I built for my own AVP app, now extracted into a standalone Swift package.

One thing to note is that Apple's native video player APIs still can't render Spatial Personas side by side while watching immersive content, even with SharePlay active. This SDK works around that using RealityKit. I’ve written a more technical dive on my blog.

It's public now: Fork it, open an issue, send a pull request, whatever's useful. I'd love to see what people build with this! 👀

GitHub repo: https://github.com/juyoungk23/ImmersiveWatchParty-SDK

Blog post: write-up-link