Per-camera capture interval; ambient recorder; fix 4-seasons one-frame bug

Per-camera capture interval:
  CAPTURE_INTERVAL_<cam> in sky-cam.conf overrides the global value for
  a specific camera.  capture.sh and 4-seasons.sh both respect it.
  Example: south at 30s saves storage; north at 5s gives smoother motion.

4-seasons.sh one-frame bug fix:
  Same root cause as the sunrise scripts — concat list had no 'duration'
  entries, collapsing all JPEG frames to timestamp 0.  Fixed by writing
  'duration INTERVAL' per frame.  Added fps=25 to the speed-adjust step
  so the VFR source resamples to a standard frame rate.

ambient-record.sh (new):
  Continuous AAC recorder for natural sounds (birds, rain, wind).
  Saves AMBIENT_CHUNK_SECS chunks to AMBIENT_DIR/<cam>/YYYY-MM-DD/HH-MM-SS.m4a.
  Reconnects automatically on stream failure.  Rolling retention via
  AMBIENT_RETENTION_DAYS.  Enabled by setting AMBIENT_ENABLED=true and
  listing cameras in AMBIENT_CAMS in sky-cam.conf, then re-running install.sh.

https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
This commit is contained in:
Claude
2026-04-21 21:08:10 +00:00
parent cdaca67d31
commit dbdd59677f
5 changed files with 145 additions and 6 deletions
+11 -5
View File
@@ -72,6 +72,10 @@ if [ "$total_images" -lt 1 ]; then
fi
echo "Images found: $total_images"
# ── Per-camera capture interval ───────────────────────────────────────────────
interval_var="CAPTURE_INTERVAL_${CAM_NAME}"
INTERVAL="${!interval_var:-${CAPTURE_INTERVAL:-10}}"
# ── Prepare output directory ──────────────────────────────────────────────────
output_dir="$MOVIES_DIR/$CAM_NAME/$ASTRO_YEAR/$SEASON/Mvt$MVT_NUM"
mkdir -p "$output_dir"
@@ -82,12 +86,14 @@ temp_video="$output_dir/${yesterday}_Mvt${MVT_NUM}-temp.mp4"
cleanup() { rm -f "$temp_file" "$temp_video" 2>/dev/null || true; }
trap cleanup EXIT
find "$image_dir" -type f -name "*.jpg" | sort | while read -r img; do
echo "file '$img'"
mapfile -t images < <(find "$image_dir" -type f -name "*.jpg" | sort)
for img in "${images[@]}"; do
printf "file '%s'\nduration %s\n" "$img" "$INTERVAL"
done > "$temp_file"
printf "file '%s'\n" "${images[-1]}" >> "$temp_file"
# ── Step 1: Build raw video at default frame rate ─────────────────────────────
echo "Step 1/2: encoding raw video..."
# ── Step 1: Build raw video ───────────────────────────────────────────────────
echo "Step 1/2: encoding raw video from ${#images[@]} frames..."
ffmpeg -loglevel warning \
-f concat -safe 0 -i "$temp_file" \
-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_SEASONS_RAW" -vsync 2 -an \
@@ -103,7 +109,7 @@ echo "Step 2/2: speed factor $speed_factor..."
final_file="$output_dir/${yesterday}_Mvt${MVT_NUM}-Day${DAY_OF_MVT}of${DAYS_IN_MVT}-final.mp4"
if ! ffmpeg -loglevel warning \
-i "$temp_video" \
-vf "setpts=PTS/$speed_factor" \
-vf "setpts=PTS/$speed_factor,fps=25" \
-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_SEASONS_FINAL" \
-t "$target_per_clip" -an \
-y "$final_file"; then
+79
View File
@@ -0,0 +1,79 @@
#!/bin/bash
# ambient-record.sh <cam-name> — continuous ambient audio recorder.
#
# Records RTSP audio in AMBIENT_CHUNK_SECS chunks, saves to:
# AMBIENT_DIR/<cam>/YYYY-MM-DD/HH-MM-SS.m4a
#
# Files are named by the recording start time so the collection is easy to
# browse and pick from for white-noise / nature sound playback.
#
# Runs as a permanent systemd service (Type=simple) alongside capture.sh.
# Reconnects automatically if the camera stream drops.
# Applies rolling retention (AMBIENT_RETENTION_DAYS).
#
# Camera audio is typically 8 kHz mono (phone quality) — suitable for bird
# song, rain, wind, and ambient nature sounds; check your camera's web
# interface for a higher sample rate setting if available.
set -euo pipefail
SCRIPT_DIR="$(dirname "$(realpath "$0")")"
source "$SCRIPT_DIR/sky-cam.conf"
source "$SCRIPT_DIR/.env" 2>/dev/null || true
export TZ="$TIMEZONE"
CAM="${1:-}"
if [ -z "$CAM" ]; then
echo "Usage: $0 <camera-name>"
exit 1
fi
rtsp_var="CAM_RTSP_${CAM}"
RTSP_URL="${!rtsp_var:-}"
if [ -z "$RTSP_URL" ]; then
echo "ERROR: CAM_RTSP_${CAM} not set in .env"
exit 1
fi
CHUNK="${AMBIENT_CHUNK_SECS:-1800}"
BITRATE="${AMBIENT_BITRATE:-96k}"
RETAIN="${AMBIENT_RETENTION_DAYS:-30}"
SAVE_DIR="${AMBIENT_DIR:-$BASE_DIR/ambient}"
echo "Ambient recorder started: cam=$CAM chunk=${CHUNK}s bitrate=$BITRATE retain=${RETAIN}d"
echo "Saving to: $SAVE_DIR/$CAM/"
while true; do
today=$(date +%Y-%m-%d)
dir="$SAVE_DIR/$CAM/$today"
mkdir -p "$dir"
timestamp=$(date +%H-%M-%S)
outfile="$dir/${timestamp}.m4a"
echo "[$(date '+%Y-%m-%d %H:%M:%S')] Recording → $outfile (${CHUNK}s)"
ffmpeg -loglevel warning \
-rtsp_transport tcp \
-i "$RTSP_URL" \
-t "$CHUNK" \
-vn \
-c:a aac -b:a "$BITRATE" \
-y "$outfile" || true
if [ ! -s "$outfile" ]; then
echo "[$(date '+%Y-%m-%d %H:%M:%S')] [$CAM] recording failed or empty — retrying in 30s"
rm -f "$outfile"
sleep 30
continue
fi
actual=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$outfile" 2>/dev/null || echo "?")
echo "[$(date '+%Y-%m-%d %H:%M:%S')] Saved: $(basename "$outfile") (${actual}s)"
# Rolling retention
if [ "${RETAIN}" -gt 0 ]; then
deleted=$(find "$SAVE_DIR/$CAM" -name "*.m4a" -mtime +"$RETAIN" -print -delete 2>/dev/null | wc -l)
[ "$deleted" -gt 0 ] && echo "Retention: deleted $deleted file(s) older than ${RETAIN}d"
fi
done
+2 -1
View File
@@ -31,7 +31,8 @@ if [ -z "$RTSP_URL" ]; then
exit 1
fi
INTERVAL="${CAPTURE_INTERVAL:-10}"
interval_var="CAPTURE_INTERVAL_${CAM}"
INTERVAL="${!interval_var:-${CAPTURE_INTERVAL:-10}}"
echo "Starting capture: cam=$CAM interval=${INTERVAL}s"
while true; do
+32
View File
@@ -187,6 +187,38 @@ if [ "${AUDIO_ENABLED:-false}" = "true" ]; then
timers+=("sky-cam-audio-capture")
fi
# ── Ambient audio recording services ─────────────────────────────────────────
# One long-running service per camera in AMBIENT_CAMS.
# Enabled alongside the capture services so install.sh restarts them on update.
if [ "${AMBIENT_ENABLED:-false}" = "true" ]; then
for cam in "${AMBIENT_CAMS[@]}"; do
rtsp_var="CAM_RTSP_${cam}"
if [ -n "${!rtsp_var:-}" ]; then
cat > "$UNIT_DIR/sky-cam-ambient-${cam}.service" <<EOF
[Unit]
Description=Sky-Cam — ${cam}: ambient audio recorder
After=network-online.target
Wants=network-online.target
[Service]
Type=simple
ExecStart=$SCRIPT_DIR/ambient-record.sh ${cam}
Restart=on-failure
RestartSec=30
StandardOutput=journal
StandardError=journal
[Install]
WantedBy=default.target
EOF
echo " wrote sky-cam-ambient-${cam}.service"
capture_services+=("sky-cam-ambient-${cam}")
else
echo " WARNING: CAM_RTSP_${cam} not set — skipping ambient service for ${cam}"
fi
done
fi
# ── Per-camera Four Seasons jobs ─────────────────────────────────────────────
# Reads CAMERAS and SCHEDULE_SEASONS_<cam> from sky-cam.conf.
# Script receives the camera name as $1 so it knows which camera to process.
+21
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@@ -287,8 +287,16 @@ MONTAGE_MUSIC_LOOPS_Spring_2=2
# CAPTURE_STALE_SECS should always be at least 2× CAPTURE_INTERVAL.
CAPTURE_INTERVAL=10
# Per-camera overrides — uncomment and set to override the global value above.
# Useful when cameras serve different purposes (e.g. south records ambient audio
# so fewer frames is fine; north faces a busy scene and benefits from 5s).
#CAPTURE_INTERVAL_east=10
#CAPTURE_INTERVAL_north=10
#CAPTURE_INTERVAL_south=30
# Seconds without a new frame before the watchdog sends a stall notification.
# A recovery notification fires automatically when capture resumes.
# Must always be at least 2× the effective CAPTURE_INTERVAL for that camera.
CAPTURE_STALE_SECS=30
# ── Sunrise audio capture ──────────────────────────────────────────────────────
@@ -302,6 +310,19 @@ CAPTURE_AUDIO_BITRATE=96k # bitrate for the sunrise audio recording
# Audio is recorded for exactly SUNRISE_TARGET_SECS, centred on actual sunrise:
# floor(TARGET/2) seconds before, ceil(TARGET/2) after (odd second → post-sunrise).
# ── Ambient audio library ──────────────────────────────────────────────────────
# Continuously records natural sounds (birds, rain, wind) from AMBIENT_CAMS to
# build a reusable audio library. Runs as a permanent systemd service alongside
# capture.sh. Camera audio is 8 kHz mono (phone quality) — enough for nature
# sounds and white-noise style playback.
#
AMBIENT_ENABLED=false
AMBIENT_CAMS=(south) # cameras to record from
AMBIENT_DIR="${BASE_DIR}/ambient" # root storage directory
AMBIENT_CHUNK_SECS=1800 # seconds per file (default 30 min)
AMBIENT_BITRATE=96k # AAC bitrate; 6496k is plenty at 8 kHz
AMBIENT_RETENTION_DAYS=30 # delete files older than this; 0 = keep forever
# ── Mattermost — daily sunrise upload ─────────────────────────────────────────
# mattermost_url, access_token, channel_id go in .env (see bottom of this file).