i hate weather

server/mediamtx/mediamtx.yml

@@ -41,3 +41,7 @@ paths:
   all:
     source: publisher
     sourceOnDemand: no
+    # Rover Snapshot Writer
+    # Keep rover snapshots continuously updated while a rover video path is live.
+    runOnReady: /usr/local/bin/rover-snapshot-writer.sh
+    runOnReadyRestart: yes

server/mediamtx/rover-snapshot-writer.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Rover Snapshot Writer Hook
+# Purpose: Runs under mediaMTX runOnReady to keep per-rover JPEG snapshots updated on disk.
+# Scope: Writes only rover video path snapshots and ignores audio/forward/room paths.
+set -euo pipefail
+
+PATH_NAME="${MTX_PATH:-}"
+SNAP_DIR="${ROVER_SNAPSHOT_DIR:-/var/lib/rover-snapshots}"
+
+# Ignore non-rover-video paths.
+case "$PATH_NAME" in
+  ""|*-audio|*-fwd|room/*)
+    exit 0
+    ;;
+esac
+
+mkdir -p "$SNAP_DIR"
+
+exec ffmpeg -hide_banner -loglevel warning \
+  -i "srt://127.0.0.1:9000?streamid=read:${PATH_NAME}" \
+  -an \
+  -vf fps=2 \
+  -q:v 6 \
+  -update 1 \
+  "${SNAP_DIR}/${PATH_NAME}.jpg"