01
Native first
The browser keeps control whenever its media element reports support for a source.
Video.js 10 · libav.js
Universal Playback Lab
A browser-first player that prefers native media, then uses libav.js demuxing and an optional patent-free software decoder.
Checking WebCodecs…
Checking AudioWorklet…
Canvas renderer
Now playing
Loading fixture…
Preparing playback pipeline…
Route—
Duration—
Position—
Streams—
Fixtures
Exercise each playback route
02
Worker pipeline
libav.js demuxes off the main thread. WebCodecs is preferred before a software decoder is considered.
03
Patent-free fallback
The bundled software variant handles VP9, AV1, FLAC, and PCM, including 10- and 12-bit YUV420 conversion.