Real multi-device sync needs a free Firebase Realtime Database.
Create a project at console.firebase.google.com,
enable Realtime Database (start in test mode for demos), then paste your web config JSON below.
Room ----You: GuestHOST
🎬
Your movie will show here
Host pastes a link below to start
Connecting…
or
MP4, WebM, or Ogg · up to 95 MB
Playback, chat, and room members sync live across devices.