KoalaSync/docs/TESTED_SERVICES.md

Tested Streaming Services

This document tracks which streaming platforms and media servers have been tested with KoalaSync.

Service	Sync Works	Media Title	Episode Auto-Sync	Notes
YouTube	✅ Full	✅ Full	❌	Individual videos, not episodes — no episode auto-sync.
Twitch	✅ Full	✅ Full	❌	Individual streams/VODs, not episodes — no episode auto-sync.
Netflix	✅ Full	❌	❌	No media title exposed.
Emby	✅ Full	✅ Full	✅ Full	Best-in-class support.
Jellyfin	✅ Full	✅ Full	✅ Full	—
Plex	Not tested	Not tested	Not tested	—
Disney+	✅ Full	⚠️ Partial	❌	Series title only (e.g. "The Simpsons"), no episode info.
Prime Video	✅ Full	✅ Full	❌	—
HBO Max / Max	Not tested	Not tested	Not tested	—
Crunchyroll	Not tested	Not tested	Not tested	—
Vimeo	Not tested	Not tested	Not tested	—
Dailymotion	Not tested	Not tested	Not tested	—
ARD / ZDF Mediathek	Not tested	Not tested	Not tested	—

Legend

Symbol	Meaning
✅ Full	Works without limitations.
⚠️ Partial	Works with caveats (see Notes).
❌ N/A	Not applicable or not supported.

How to Contribute

Tested a service that's not listed? Found different behavior than documented?

1. Test KoalaSync on the service with two browser profiles
2. Use the extension's Dev tab to check readyState, currentTime, and media title
3. Open a GitHub issue or PR updating this table

Technical Background

KoalaSync works on any website with a standard HTML5 <video> element that allows script injection.

Limited functionality on certain platforms is typically caused by:

• DRM/Copy Protection (e.g., Widevine on Netflix) which restricts access to media metadata like title and playback state
• Shadow DOM encapsulation that hides video elements from content scripts
• Strict Content Security Policies (CSP) that block script injection

Websites with heavily obfuscated custom players (e.g., complex Shadow DOM, iframe isolation) may require platform-specific workarounds in content.js.