Byob Bring Your Own Binge

byob (Bring Your Own Binge) is a free, open-source Watch2Gether alternative. Create a room, share the link, and watch together.

**What the extension does:**

- Syncs non-YouTube/Vimeo streaming sites (Crunchyroll, anime sites, etc.) by hooking into `<video>` elements
- Shows a sync bar with play/pause controls, progress bar, time counter, and ready count on external player pages
- Displays a "Play the video to start syncing" toast to guide users through the autoplay gesture
- Shows SponsorBlock segment colors on YouTube's embedded seek bar
- Scrapes page metadata (title, thumbnail) from external sites for display in the room

**What byob.video supports (with or without the extension):**

- Synchronized YouTube playback — play, pause, seek in real-time
- Vimeo — native embedded player with full sync support
- Direct video file URLs (.mp4, .webm, .ogg, .mov, .mkv) with a built-in synced HTML5 player
- Video queue with drag-to-reorder and auto-advance
- SponsorBlock integration with per-room category settings (auto-skip or show in bar)
- Room history and persistence across server restarts
- Dark/light theme
- Random usernames, renamable, visible in user list

**How it works:**

1. Create a room at byob.video
2. Share the room link with friends
3. Paste video URLs and watch together
4. For non-YouTube sites, click "Open Player Window" and the extension syncs playback automatically

Source code: https://github.com/joegoldin/byob.video