Claude
9e1087f875
Adds weather-tag.sh, a small failure-safe helper that queries OpenWeather's free "Current weather" endpoint and prints one tag from a fixed vocabulary (thunderstorm, rain, rainshower, snow, snowstorm, fog, windy, cloudy, clear) or nothing on any failure. ambient-record.sh calls it just before each 30-minute chunk so the filename reflects conditions at the moment of capture, e.g. east-08-30-00-thunderstorm.m4a east-12-00-00-clear.m4a A foggy dawn no longer mislabels the sunny afternoon files. Off by default. Enable with WEATHER_ENABLED=true and an OPENWEATHER_API_KEY entry in .env; missing key / API error / disabled toggle all fall through to the un-tagged filename, never blocking the recorder.
91 lines
3.0 KiB
Bash
Executable File
91 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
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# ambient-record.sh <cam-name> — continuous ambient audio recorder.
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#
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# Records RTSP audio in AMBIENT_CHUNK_SECS chunks, saves to:
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# AMBIENT_DIR/<cam>/YYYY-MM-DD/HH-MM-SS.m4a
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#
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# Files are named by the recording start time so the collection is easy to
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# browse and pick from for white-noise / nature sound playback.
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#
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# Runs as a permanent systemd service (Type=simple) alongside capture.sh.
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# Reconnects automatically if the camera stream drops.
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# Applies rolling retention (AMBIENT_RETENTION_DAYS).
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#
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# Camera audio is typically 8 kHz mono (phone quality) — suitable for bird
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# song, rain, wind, and ambient nature sounds; check your camera's web
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# interface for a higher sample rate setting if available.
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set -euo pipefail
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SCRIPT_DIR="$(dirname "$(realpath "$0")")"
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source "$SCRIPT_DIR/sky-cam.conf"
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source "$SCRIPT_DIR/.env" 2>/dev/null || true
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export TZ="$TIMEZONE"
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CAM="${1:-}"
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if [ -z "$CAM" ]; then
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echo "Usage: $0 <camera-name>"
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exit 1
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fi
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rtsp_var="CAM_RTSP_${CAM}"
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RTSP_URL="${!rtsp_var:-}"
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if [ -z "$RTSP_URL" ]; then
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echo "ERROR: CAM_RTSP_${CAM} not set in .env"
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exit 1
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fi
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CHUNK="${AMBIENT_CHUNK_SECS:-1800}"
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BITRATE="${AMBIENT_BITRATE:-96k}"
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retain_var="AMBIENT_RETENTION_DAYS_${CAM}"
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RETAIN="${!retain_var:-${AMBIENT_RETENTION_DAYS:-30}}"
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SAVE_DIR="${AUDIO_DIR:-$BASE_DIR/audio}"
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echo "Ambient recorder started: cam=$CAM chunk=${CHUNK}s bitrate=$BITRATE retain=${RETAIN}d"
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echo "Saving to: $SAVE_DIR/$CAM/"
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while true; do
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today=$(date +%Y-%m-%d)
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dir="$SAVE_DIR/$CAM/$today"
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mkdir -p "$dir"
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timestamp=$(date +%H-%M-%S)
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# Weather tag for THIS chunk — queried right before recording so the
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# filename reflects conditions at the time of capture, not earlier in the
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# day. weather-tag.sh prints empty on disabled / missing key / API error,
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# so the un-tagged filename is the safe fallback.
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weather_tag=$("$SCRIPT_DIR/weather-tag.sh" 2>/dev/null || true)
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if [ -n "$weather_tag" ]; then
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outfile="$dir/${CAM}-${timestamp}-${weather_tag}.m4a"
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else
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outfile="$dir/${CAM}-${timestamp}.m4a"
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fi
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] Recording → $outfile (${CHUNK}s)"
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ffmpeg -loglevel warning \
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-rtsp_transport tcp \
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-i "$RTSP_URL" \
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-t "$CHUNK" \
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-vn \
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-c:a aac -b:a "$BITRATE" \
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-y "$outfile" || true
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if [ ! -s "$outfile" ]; then
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] [$CAM] recording failed or empty — retrying in 30s"
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rm -f "$outfile"
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sleep 30
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continue
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fi
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actual=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$outfile" 2>/dev/null || echo "?")
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] Saved: $(basename "$outfile") (${actual}s)"
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# Rolling retention
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if [ "${RETAIN}" -gt 0 ]; then
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deleted=$(find "$SAVE_DIR/$CAM" -name "*.m4a" -mtime +"$RETAIN" -print -delete 2>/dev/null | wc -l)
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[ "$deleted" -gt 0 ] && echo "Retention: deleted $deleted file(s) older than ${RETAIN}d"
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fi
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done
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