TVSync - Synchronized TV Playback

A Lethal Company mod that provides perfectly synchronized YouTube video playback on the ship television for all players in multiplayer.

Fork of YTTV / Television Controller with a complete rewrite of the networking layer.

Features

• Host-authoritative playback - the host controls everything; clients mirror the host state
• Drift correction - periodic sync broadcasts keep all clients within 150ms of the host
• Ready-check system - playback doesn't start until all players have downloaded and prepared the video
• Late join support - players joining mid-video automatically sync to the current position
• Pause/Resume/Seek/Stop/Restart - all synchronized across all players
• Client-side volume - each player controls their own volume independently
• Position memory - optionally remembers position when toggling TV off/on
• Multi-language - English and Russian support

Commands

Command	Description
/tplay [URL]	Play a YouTube video (host only)
/ttime [TIME]	Seek to timestamp, e.g. 1:30 or 1:02:30 (host only)
/treset	Restart from beginning (host only)
/tpause	Pause playback (host only)
/tresume	Resume playback (host only)
/tstop	Stop playback entirely (host only)
/tvolume [0-100]	Set your local volume
/tposition [true/false]	Toggle position memory
/thelp	Show help

How Sync Works

1. Host receives /tplay command
2. Host broadcasts the URL to all clients
3. Each client downloads and prepares the video independently
4. Each client reports "ready" back to the host
5. Host waits until all clients are ready (or timeout expires)
6. Host picks a future network timestamp and broadcasts "start at time X"
7. All clients begin playback at exactly the same network moment
8. Every 3 seconds, host broadcasts its current playback position
9. Clients compare and apply drift correction (speed adjust or hard seek)

Installation

Drop the TVSync.dll into BepInEx/plugins/.

The mod will automatically create a TVSync/ folder in your game directory with language files and yt-dlp.

Configuration

Config file: BepInEx/config/TVSync.cfg

• Language - en or ru
• DriftThresholdMs - max drift before correction (default: 150ms)
• SyncIntervalSec - how often host broadcasts sync (default: 3s)
• ReadyTimeoutSec - max wait for all players (default: 30s)
• MaxSeekThresholdMs - drift above this does hard seek (default: 500ms)

Credits

• Original: KoderTech (Television Controller)
• Fork: TheByteNinja (Television Controller Fix)
• Fork: MAR-Mods (YTTV)
• Sync rewrite: whelve13 (TVSync)

AI was used in the process of rewriting.