Brandyn / Techy
9bdf9f1947
bin/mtx-on-ready.sh (runOnReady inside the mediamtx container) posts the is-live notice and, for sources whose audio is not Opus, runs ffmpeg: video copy, audio -> Opus, published over MediaMTX's loopback RTSP to <user>/<Title>.webrtc (record: no). dumpd accepts .webrtc publishes only from 127.0.0.1. The portal hides mirror paths, plays the mirror over WHEP (HLS stays on the source), holds an AAC source for 15 s while its mirror comes up, and corrects the viewer count. Verified headless with a mocked path list. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
37 lines
2.2 KiB
Bash
Executable File
37 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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# MediaMTX runOnReady hook (runs INSIDE the mediamtx container; busybox sh + wget + ffmpeg from the -ffmpeg image).
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# Env from MediaMTX: MTX_PATH (user/Title). From compose: LIVE_WEBHOOK_URL, LIVE_HOST.
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# 1. optional Discord "is live" notice
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# 2. WebRTC audio mirror: browsers cannot receive AAC over WebRTC (MediaMTX forwards Opus/G711/G722/LPCM only), and
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# OBS sends AAC. For every stream whose audio is not already Opus, copy the video and transcode the audio to Opus
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# into the sibling path "<user>/<Title>.webrtc". The live portal plays that path over WebRTC; recordings, HLS and
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# the Discord notice stay on the original. Mirrors are published from 127.0.0.1 inside this container only, which
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# is the only publisher dumpd accepts for ".webrtc" paths. Audio-only transcode: a few % of one core per stream.
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# MediaMTX kills this process when the source path goes away.
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case "$MTX_PATH" in *.webrtc) exit 0 ;; esac
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u="${MTX_PATH%%/*}"; t="${MTX_PATH#*/}"
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if [ -n "$LIVE_WEBHOOK_URL" ]; then
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wget -q -O /dev/null --header="Content-Type: application/json" \
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--post-data="{\"content\":\"🔴 **$u** is live: $t — https://$LIVE_HOST/\"}" "$LIVE_WEBHOOK_URL" 2>/dev/null &
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fi
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# which audio does the source carry? (API on loopback; "Opus" needs no mirror, no audio needs no mirror)
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tracks=""
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for i in 1 2 3 4 5; do
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tracks=$(wget -q -O - "http://127.0.0.1:9997/v3/paths/get/$MTX_PATH" 2>/dev/null) && [ -n "$tracks" ] && break
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sleep 1
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done
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case "$tracks" in
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*Opus*) exit 0 ;;
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*"MPEG-4 Audio"*|*"MPEG-1 Audio"*|*G711*|*G722*|*LPCM*|*AC-3*) ;;
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*) exit 0 ;; # no (recognised) audio: nothing to mirror
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esac
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echo "mirror: $MTX_PATH -> $MTX_PATH.webrtc (audio -> Opus)"
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n=0
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while [ $n -lt 10 ]; do # retry: the source may not be readable for the first second
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ffmpeg -nostdin -hide_banner -loglevel warning -fflags nobuffer -flags low_delay \
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-rtsp_transport tcp -i "rtsp://127.0.0.1:8554/$MTX_PATH" \
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-map 0:v:0 -map 0:a:0 -c:v copy -c:a libopus -b:a 128k -ar 48000 -ac 2 -application lowdelay -frame_duration 20 \
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-f rtsp -rtsp_transport tcp "rtsp://127.0.0.1:8554/$MTX_PATH.webrtc"
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n=$((n+1)); sleep 2
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done
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