Compatibility

Website

Browsers and audio/video formats

	H.264	H.265/HEVC	mp4 container	mkv container	Dolby-patented audio codecs like AC3/DTS
Chromium-based browsers with modern GPU and hardware acceleration enabled	✓	✓	✓	✓
Chromium-based browsers	✓		✓	✓
Firefox	Depends	Depends	✓

Extension

Browsers and features

	Screenshots	Audio Recording (non-DRM)	Audio Recording (DRM)	Side Panel	WebSocket Interface
Most Chromium-based browsers	✓	✓	✓	✓	✓
Firefox	✓	✓
Firefox for Android		✓
Kiwi Browser (Android)		✓	✓
Edge Canary (Android)	✓

Streaming services and subtitle detection

Service	Compatibility
Netflix	✓
YouTube	✓
Disney Plus	Seeking/timing is completely broken (issue)
Hulu	✓
TVer	✓
Bandai Channel	✓
Amazon Prime	Timing sometimes off by 30 seconds
Emby/Jellyfin	Configure custom domains from the page-specific settings.
Rakuten Viki	✓
osnplus	Compatibility with osnplus is currently unknown. Reach out if you have more information on this.
Plex	External subtitles only. Configure custom domains from the page-specific settings.
BiliBili	✓
NRK TV	✓
HBO Max	✓
Yle Areena	✓