diagnostics
Setup check
A self-diagnose page that probes your browser and tells you exactly what's working — and what isn't.
Running async probes…
Browser APIs
FAIL- FAILMedia Source ExtensionsMissing — MKV streams won't play. Try a different browser.Fix this → /help/MSE_MISSING
- WARNManagedMediaSource (iOS)Not present (non-iOS or older Safari). MSE backpressure unavailable.
- WARNWebCodecsMissing — scrubber thumbnails will fall back to server-side rendering.
- WARNService WorkerNot available (private mode or older browser). PiP / AirPlay routing disabled.
- WARNOPFS (origin-private file system)Missing — backward seeks won't be cached locally.Fix this → /help/OPFS_DENIED
- WARNWake LockMissing — the screen may dim during playback.
- WARNMedia SessionMissing — no lock-screen / notification scrubber.
- WARNWebGPUNot available — the experimental upscaler can't run.
- WARNrequestVideoFrameCallbackMissing — scrubber falls back to ~10 Hz timeupdate.
- WARNPage VisibilityMissing — background/foreground detection unavailable.
- WARNBattery StatusNot available (Safari hides it). Battery-aware adaptation off.
- WARNNetwork InformationNot available (Safari hides it). Adaptive bitrate falls back to bandwidth probes.
Codec coverage
WARN- OKH.264 (AVC)native: yes · mse: yes
- WARNH.265 (HEVC)Missing — streams using this codec route to alternates or fail.Fix this → /help/HW_DECODE_NONE
- WARN
- WARN
- OKAAC (browser-native)native: yes · mse: yes
- WARNOpus (browser-native)Browser refuses; routes to WASM Sipario Engine when available.
- WARNFLAC (browser-native)Browser refuses; routes to WASM Sipario Engine when available.
- WARNAC-3 (browser-native)Browser refuses; routes to WASM Sipario Engine when available.
- WARNE-AC-3 (browser-native)Browser refuses; routes to WASM Sipario Engine when available.
- OKAC-3 (WASM)Decodable via WASM Sipario Engine.
- OKE-AC-3 (WASM)Decodable via WASM Sipario Engine.
- OKDTS (WASM)Decodable via WASM Sipario Engine.
- OKTrueHD (WASM)Decodable via WASM Sipario Engine.
- OKVorbis (WASM)Decodable via WASM Sipario Engine.
- OKMP3 (WASM)Decodable via WASM Sipario Engine.
- OKMP4 container
- OKWebM container
- WARNMKV (native)No native MKV — every MKV routes through the transmux engine (intended).