adds music playing

.gitignore

@@ -1,6 +1,9 @@
 # Created by https://www.toptal.com/developers/gitignore/api/visualstudio,windows,aspnetcore
 # Edit at https://www.toptal.com/developers/gitignore?templates=visualstudio,windows,aspnetcore
 
+# Background-music file looped by the `music` service (large, provide locally)
+combined.mp4
+
 ### ASPNETCore ###
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.

README.md

@@ -2,6 +2,14 @@ just do the below command and the website is acessible at http://localhost:8000
 ```
 docker-compose up
 ```
+
+This also starts a `music` container that loops the audio track of
+`./combined.mp4` and publishes it to the puppeteer-screen-recorder RTMP `sound`
+channel (`rtmp://host.docker.internal:1935/live/weather/sound`), which the
+weather streamer muxes into its live output. Put your background-music file at
+`./combined.mp4` in this repo root (any file with an audio track works; it loops
+forever and is gitignored). The streamer's node-media-server must be reachable
+on host port 1935.
 ---
 # WeatherStar 4000+
 

docker-compose.yml

@@ -11,3 +11,22 @@ services:
       - ./nginx.conf:/etc/nginx/nginx.conf:ro
     ports:
       - '8000:80'
+  music:
+    container_name: music
+    build:
+      context: ./music
+      dockerfile: Dockerfile
+    volumes:
+      - ./combined.mp4:/media/combined.mp4:ro
+    environment:
+      - MUSIC_FILE=/media/combined.mp4
+      # Publishes to the node-media-server "sound" channel, which lives in the
+      # puppeteer-screen-recorder compose. We reach it over the host loopback
+      # via nms's published 1935 port, so the two compose projects stay
+      # independent (no shared docker network required).
+      - RTMP_MUSIC_STREAM_URL=rtmp://host.docker.internal:1935/live/weather/sound
+    # Docker Desktop resolves host.docker.internal automatically; this line
+    # makes it resolve on Linux hosts too.
+    extra_hosts:
+      - 'host.docker.internal:host-gateway'
+    restart: unless-stopped

music/Dockerfile

@@ -0,0 +1,11 @@
+# Streams looping background music (the audio track of combined.mp4) to the
+# node-media-server "sound" RTMP endpoint. The weather streamer then muxes
+# this audio into its live video output.
+FROM alpine:3.20
+
+RUN apk add --no-cache ffmpeg
+
+COPY stream-music.sh /usr/local/bin/stream-music.sh
+RUN chmod +x /usr/local/bin/stream-music.sh
+
+ENTRYPOINT ["/usr/local/bin/stream-music.sh"]

music/stream-music.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+# Continuously stream the audio track of a local video file to an RTMP
+# endpoint (the node-media-server "sound" channel), looping forever so the
+# weather stream always has background music.
+set -u
+
+MUSIC_FILE="${MUSIC_FILE:-/media/combined.mp4}"
+: "${RTMP_MUSIC_STREAM_URL:?RTMP_MUSIC_STREAM_URL must be set}"
+
+echo "streaming music: ${MUSIC_FILE} -> ${RTMP_MUSIC_STREAM_URL}"
+
+# Outer loop so we reconnect if the media server restarts or the connection
+# drops. -stream_loop -1 loops the file itself; -re paces it at real time.
+while true; do
+  ffmpeg -hide_banner -loglevel warning \
+    -re -stream_loop -1 -i "${MUSIC_FILE}" \
+    -vn \
+    -c:a aac -b:a 128k -ar 44100 -ac 2 \
+    -f flv "${RTMP_MUSIC_STREAM_URL}"
+
+  echo "music ffmpeg exited with code $?; retrying in 5s..."
+  sleep 5
+done