Two broadcast-experience improvements:
- Audio: the Go-Live stream was video-only. Capture the desktop sound (the
default PipeWire/Pulse sink monitor, @DEFAULT_MONITOR@) as a second ffmpeg
input and mux AAC into the mpegts; the library re-encodes it to Opus for
Discord. Controlled by STREAM_AUDIO / STREAM_AUDIO_SOURCE (default on). ffmpeg
inherits XDG_RUNTIME_DIR to reach the pulse socket. Verified: the streamer now
reports "Found audio stream" and the monitor carries Chrome audio (~-11 dB).
- Subtitles: in the browse scenario, default captions OFF, but auto-enable a
Korean track when the video offers one (getOption captions tracklist ->
setOption / unloadModule).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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