Mimir

Realtime cameras, microphones, chirplets, and field evidence organized into one coherent stream machine.

OBS Receiver Setup

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OBS Receiver Setup

Add each stream as a separate OBS Media Source.

For every source:

  1. Add Sources > + > Media Source.
  2. Uncheck Local File.
  3. Set Input to the relevant SRT URL.
  4. Set Input Format to mpegts.
  5. Enable Restart playback when source becomes active.

Default URLs

These match config/localcast.example.json when the receiver is listening locally:

video:   srt://0.0.0.0:5100?mode=listener&latency=120000&timeout=5000000
desktop: srt://0.0.0.0:5101?mode=listener&latency=120000&timeout=5000000
voice:   srt://0.0.0.0:5102?mode=listener&latency=120000&timeout=5000000

If using a passphrase, append:

&passphrase=YOUR_SECRET&pbkeylen=16

OBS should be open before the sender starts if OBS is the SRT listener. If a source gets wedged, deactivate and reactivate the Media Source before changing ports; port churn is a symptom, not a configuration strategy.

V1 Smoke Gate

Before adding receiver plugins, native OBS surfaces, or new bridge elegance, run the bounded witness ledger in OBS V1 Smoke Test.

The required artifact is:

calibration/runs/obs-v1-smoke-ledger.json

It must include sender_capture, srt_receive, and obs_present evidence for every planned endpoint, plus endpoint drift, end-to-end latency, and confidence. If the ledger fails, fix the clocks before expanding the receiver. The field may be charming while lying. Still a liar.

Synchronization

The video SRT source is a timed media artifact in the Fensalir path, not just scenery in OBS. Keep the listener URL and latency aligned with the Fensalir/native presentation ledger.

The live sync heartbeat is calibration/runs/av-sync-status.json. remote-video-latency-ms is presentation delay, not merely the SRT URL’s latency parameter. Check remote_video.delta_ns before trusting the composite. If that number grows, fix the configured media delay or the ingest path instead of eyeballing it in OBS like a doomed little stage magician.

Source Layout

Recommended OBS scene:

Husband PC - Video       Media Source, monitor off
Husband PC - Desktop     Media Source, audio only, monitor as needed
Husband PC - Voice       Media Source, audio only, monitor as needed

Mute the video source if it carries no audio. Keep audio filters on the separate audio sources.