Corregge cloud-init montato, PublisherOnline multi-nodo e E2E locale-aware.

Senza volume stream-node i nodi Hetzner nascevano senza MediaMTX; sync live usa ora Client.for_session e rtmpconns (MediaMTX 1.20).

Co-authored-by: Cursor <cursoragent@cursor.com>

infra/docker-compose.collaudo.yml

@@ -16,13 +16,18 @@ services:
       - "18888:8888"   # HLS diretto opzionale; in genere basta /hls via edge+NPM
 
   # Passa tutto .env (HCLOUD_*, STREAM_*, …) ai processi Rails/Sidekiq
+  # Monta cloud-init: HCLOUD_USER_DATA_FILE punta a path host non presente nell'immagine.
   rails:
     env_file:
       - .env
+    volumes:
+      - ./stream-node:/opt/matchlivetv/infra/stream-node:ro
 
   sidekiq:
     env_file:
       - .env
+    volumes:
+      - ./stream-node:/opt/matchlivetv/infra/stream-node:ro
 
   # ntfy collaudo su porta diversa (evita confusione se si punta per sbaglio l'host)
   ntfy:

infra/docker-compose.prod.yml

@@ -135,6 +135,7 @@ services:
       - ${MATCHLIVETV_VIDEOS_ROOT:-/media/videos/matchlivetv}/recordings:/recordings
       - ${MATCHLIVETV_VIDEOS_ROOT:-/media/videos/matchlivetv}/active_storage:/app/storage
       - ${MATCHLIVETV_VIDEOS_ROOT:-/media/videos/matchlivetv}/log:/app/log
+      - ${HCLOUD_USER_DATA_HOST_DIR:-./stream-node}:/opt/matchlivetv/infra/stream-node:ro
     healthcheck:
       test: ["CMD", "curl", "-f", "http://127.0.0.1:3000/up"]
       interval: 15s
@@ -230,6 +231,7 @@ services:
       - ${MATCHLIVETV_VIDEOS_ROOT:-/media/videos/matchlivetv}/recordings:/recordings
       - ${MATCHLIVETV_VIDEOS_ROOT:-/media/videos/matchlivetv}/active_storage:/app/storage
       - ${MATCHLIVETV_VIDEOS_ROOT:-/media/videos/matchlivetv}/log:/app/log
+      - ${HCLOUD_USER_DATA_HOST_DIR:-./stream-node}:/opt/matchlivetv/infra/stream-node:ro
 
   garage:
     image: dxflrs/garage:v1.0.1

infra/stream-node/cloud-init.yaml

@@ -49,10 +49,11 @@ write_files:
       docker pull bluenviron/mediamtx:latest
       docker rm -f mediamtx 2>/dev/null || true
       # Slate offline (alwaysAvailable) — richiesta da Mediamtx::Client#create_path
+      # MediaMTX 1.20+: il publisher RTMP deve matchare canali audio della slate (stereo).
       mkdir -p /slates
       if [ ! -f /slates/offline.mp4 ]; then
         ffmpeg -y -f lavfi -i color=c=black:s=1280x720:d=2 -f lavfi -i anullsrc=r=44100:cl=stereo \
-          -c:v libx264 -t 2 -pix_fmt yuv420p -c:a aac -shortest /slates/offline.mp4
+          -c:v libx264 -t 2 -pix_fmt yuv420p -c:a aac -ac 2 -shortest /slates/offline.mp4
       fi
       # Debian cloud image: docker.io senza apparmor_parser → serve unconfined o pkg apparmor
       docker run -d --name mediamtx --restart unless-stopped --network host \