65 lines
2.3 KiB
Markdown
65 lines
2.3 KiB
Markdown
# OBS Receiver Setup
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Add each stream as a separate OBS Media Source.
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For every source:
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1. Add `Sources > + > Media Source`.
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2. Uncheck `Local File`.
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3. Set `Input` to the relevant SRT URL.
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4. Set `Input Format` to `mpegts`.
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5. Enable `Restart playback when source becomes active`.
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## Default URLs
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These match `config/localcast.example.json` when the receiver is listening locally:
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```text
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video: srt://0.0.0.0:5100?mode=listener&latency=120000&timeout=5000000
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desktop: srt://0.0.0.0:5101?mode=listener&latency=120000&timeout=5000000
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voice: srt://0.0.0.0:5102?mode=listener&latency=120000&timeout=5000000
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```
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If using a passphrase, append:
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```text
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&passphrase=YOUR_SECRET&pbkeylen=16
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```
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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.
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## V1 Smoke Gate
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Before adding receiver plugins, native OBS surfaces, or new bridge elegance, run
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the bounded witness ledger in [[obs-v1-smoke-test|OBS V1 Smoke Test]].
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The required artifact is:
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```text
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calibration/runs/obs-v1-smoke-ledger.json
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```
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It must include `sender_capture`, `srt_receive`, and `obs_present` evidence for
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every planned endpoint, plus endpoint drift, end-to-end latency, and confidence.
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If the ledger fails, fix the clocks before expanding the receiver. The field may
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be charming while lying. Still a liar.
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## Synchronization
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The video SRT source is a timed media artifact in the Fensalir path, not just
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scenery in OBS. Keep the listener URL and latency aligned with the
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Fensalir/native presentation ledger.
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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.
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## Source Layout
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Recommended OBS scene:
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```text
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Husband PC - Video Media Source, monitor off
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Husband PC - Desktop Media Source, audio only, monitor as needed
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Husband PC - Voice Media Source, audio only, monitor as needed
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```
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Mute the video source if it carries no audio. Keep audio filters on the separate audio sources.
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