supportsMux method

  1. @override
bool supportsMux(
  1. Container container
)
override

No first-party web muxer yet: createMuxer returns null, so advertising mux support would make the negotiator select this backend and then get null. The real fMP4/WebM web muxer (MediaRecorder / a pure-Dart writer) lands in a later phase; flip this back on when createMuxer is real.

Implementation

@override
bool supportsMux(Container container) => false;