Claude
ec8eb7aebf
A stddev-only filter would wrongly drop near-black night frames. Now only skips a frame when BOTH stddev < GREY_MIN AND mean brightness > GREY_DARK_FLOOR (default 30/255). Night frames are dark so they always pass; bad-signal grey frames are mid-bright so they are caught. https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
187 lines
9.6 KiB
Bash
Executable File
187 lines
9.6 KiB
Bash
Executable File
#!/bin/bash
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# 4-seasons.sh — create one daily clip from yesterday's images, sized to its
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# share of the corresponding Vivaldi movement's music duration.
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#
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# On the last day of a movement period, automatically runs montage-mvt.sh to
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# compile the full movement montage.
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#
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# Run once per day from cron (e.g. 01:00 daily).
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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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export TIMEZONE # make it visible to season_info.py subprocess
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# Camera name: required first argument (systemd passes it via ExecStart).
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CAM_NAME="${1:-}"
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if [ -z "$CAM_NAME" ]; then
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echo "Usage: $0 <camera-name>"
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echo " e.g. $0 east or $0 north"
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exit 1
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fi
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# ── Configuration ──────────────────────────────────────────────────────────────
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base_dir="$BASE_DIR"
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music_base_dir="$MUSIC_DIR"
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[ ! -d "$music_base_dir" ] && music_base_dir="$SCRIPT_DIR/music"
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# ── Date setup ────────────────────────────────────────────────────────────────
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yesterday=$(date --date="yesterday" +%Y-%m-%d)
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echo "Processing: $yesterday"
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# ── Season / movement info from astronomical calculation ──────────────────────
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_season_info="$(python3 "$SCRIPT_DIR/season_info.py" "$yesterday")" || {
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echo "Error: season_info.py failed — check Python dependencies (suntime pytz)"
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exit 1
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}
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eval "$_season_info"
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# Provides: SEASON MVT_NUM DAY_OF_MVT DAYS_IN_MVT MVT_START MVT_END
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# IS_LAST_DAY ASTRO_YEAR
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echo "Season=$SEASON Mvt=$MVT_NUM Year=$ASTRO_YEAR Day=$DAY_OF_MVT/$DAYS_IN_MVT LastDay=$IS_LAST_DAY"
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# ── Locate music file and get its duration ────────────────────────────────────
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music_file=$(find "$music_base_dir" -type f -iname "*${SEASON}*" \
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| grep -iE "Mvt[^0-9]*${MVT_NUM}[^0-9]" | sort | head -n 1)
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if [ -z "$music_file" ] || [ ! -f "$music_file" ]; then
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echo "ERROR: Music file not found for $SEASON Mvt $MVT_NUM in $music_base_dir"
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exit 1
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fi
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music_duration=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$music_file")
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echo "Music: $(basename "$music_file") ($music_duration s)"
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# Each daily clip covers (music_duration * loops) / DAYS_IN_MVT seconds.
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# Short movements use loops > 1 so each day gets more screen time.
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loops_var="MONTAGE_MUSIC_LOOPS_${SEASON}_${MVT_NUM}"
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loops="${!loops_var:-${MONTAGE_MUSIC_LOOPS:-1}}"
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target_per_clip=$(echo "scale=6; $music_duration * $loops / $DAYS_IN_MVT" | bc)
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echo "Target clip duration: $target_per_clip s ($DAYS_IN_MVT days in movement, ${loops}x music)"
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# ── Locate yesterday's images ─────────────────────────────────────────────────
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image_dir="$base_dir/$CAM_NAME/$yesterday"
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if [ ! -d "$image_dir" ]; then
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echo "WARNING: Image directory $image_dir not found — skipping $yesterday."
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exit 0
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fi
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total_images=$(find "$image_dir" -type f -name "*.jpg" | wc -l)
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if [ "$total_images" -lt 1 ]; then
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echo "WARNING: No images in $image_dir — skipping $yesterday."
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exit 0
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fi
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echo "Images found: $total_images"
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# ── Per-camera capture interval ───────────────────────────────────────────────
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interval_var="CAPTURE_INTERVAL_${CAM_NAME}"
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INTERVAL="${!interval_var:-${CAPTURE_INTERVAL:-10}}"
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# ── Prepare output directory ──────────────────────────────────────────────────
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output_dir="$MOVIES_DIR/$CAM_NAME/$ASTRO_YEAR/$SEASON/Mvt$MVT_NUM"
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mkdir -p "$output_dir"
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# ── Build sorted image list ───────────────────────────────────────────────────
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temp_file=$(mktemp --suffix=.txt)
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temp_video="$output_dir/${yesterday}_Mvt${MVT_NUM}-temp.mp4"
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cleanup() { rm -f "$temp_file" "$temp_video" 2>/dev/null || true; }
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trap cleanup EXIT
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mapfile -t all_images < <(find "$image_dir" -type f -name "*.jpg" | sort)
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# Validate each frame: skip empty files, corrupt JPEGs, and optionally grey/uniform frames.
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# SEASONS_GREY_STDDEV_MIN=0 (default) disables the grey filter.
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# Set to e.g. 5 in sky-cam.conf to drop uniform grey frames (bad-signal captures).
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GREY_MIN="${SEASONS_GREY_STDDEV_MIN:-0}"
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GREY_DARK_FLOOR="${SEASONS_GREY_DARK_FLOOR:-30}" # frames darker than this are never skipped
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images=(); bad=0; grey=0
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for img in "${all_images[@]}"; do
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# Empty or unreadable
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if [ ! -r "$img" ] || [ ! -s "$img" ]; then
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echo "WARNING: skipping empty/missing frame: $(basename "$img")"
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((bad++)) || true; continue
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fi
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# Corrupt JPEG — ffprobe can't identify any video stream
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if ! ffprobe -v quiet -select_streams v:0 \
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-show_entries stream=codec_name -of csv=p=0 "$img" 2>/dev/null \
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| grep -q .; then
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echo "WARNING: skipping corrupt frame: $(basename "$img")"
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((bad++)) || true; continue
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fi
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# Optional: skip uniform-grey bad-signal frames.
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# A frame is bad-signal if it is BOTH uniform (low stddev) AND not dark.
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# Night frames are dark so they pass even with low stddev.
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if [ "$GREY_MIN" != "0" ] && command -v convert &>/dev/null; then
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read -r stddev mean < <(convert "$img" -colorspace Gray \
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-format "%[fx:int(standard_deviation*255)] %[fx:int(mean*255)]" \
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info: 2>/dev/null || echo "255 128")
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if [ "${stddev:-255}" -lt "$GREY_MIN" ] && [ "${mean:-0}" -gt "$GREY_DARK_FLOOR" ]; then
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((grey++)) || true; continue
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fi
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fi
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images+=("$img")
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done
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[ "$bad" -gt 0 ] && echo "WARNING: skipped $bad corrupt/empty frame(s) of ${#all_images[@]}"
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[ "$grey" -gt 0 ] && echo "INFO: skipped $grey grey/uniform frame(s) (SEASONS_GREY_STDDEV_MIN=${GREY_MIN})"
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for img in "${images[@]}"; do
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printf "file '%s'\nduration %s\n" "$img" "$INTERVAL"
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done > "$temp_file"
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printf "file '%s'\n" "${images[-1]}" >> "$temp_file"
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# ── Step 1: Build raw video ───────────────────────────────────────────────────
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echo "Step 1/2: encoding raw video from ${#images[@]} frames ($(( ${#images[@]} * INTERVAL / 3600 ))h coverage)..."
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ffmpeg -loglevel warning \
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-f concat -safe 0 -i "$temp_file" \
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-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_SEASONS_RAW" -vsync 2 -an \
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-y "$temp_video"
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raw_duration=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$temp_video")
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echo "Raw duration: $raw_duration s"
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# Warn if raw video covers less than 50% of expected image count (big gap or camera outage)
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expected_dur=$(echo "scale=0; ${#images[@]} * $INTERVAL" | bc)
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coverage_pct=$(echo "scale=0; $raw_duration * 100 / $expected_dur" | bc 2>/dev/null || echo "?")
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if [ "$coverage_pct" != "?" ] && [ "$coverage_pct" -lt 50 ]; then
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echo "WARNING: raw video is ${coverage_pct}% of expected ${expected_dur}s — significant image gap detected"
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"$SCRIPT_DIR/notify.sh" "WARNING: [$CAM_NAME] $SEASON Mvt$MVT_NUM Day$DAY_OF_MVT — only ${coverage_pct}% coverage ($yesterday)" \
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"Raw video ${raw_duration}s of expected ${expected_dur}s — check camera logs for gaps" || true
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fi
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# ── Step 2: Speed-adjust to target clip duration ──────────────────────────────
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speed_factor=$(echo "scale=6; $raw_duration / $target_per_clip" | bc)
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echo "Step 2/2: speed factor $speed_factor..."
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final_file="$output_dir/${CAM_NAME}-${yesterday}_Mvt${MVT_NUM}-Day${DAY_OF_MVT}of${DAYS_IN_MVT}-final.mp4"
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if ! ffmpeg -loglevel warning \
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-i "$temp_video" \
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-vf "setpts=PTS/$speed_factor,fps=25" \
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-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_SEASONS_FINAL" \
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-t "$target_per_clip" -an \
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-y "$final_file"; then
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rm -f "$final_file"
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"$SCRIPT_DIR/notify.sh" "FAILED: [$CAM_NAME] $SEASON Mvt$MVT_NUM Day$DAY_OF_MVT speed-adjust ($yesterday)" \
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"ffmpeg speed-adjust failed — re-run 4-seasons.sh $CAM_NAME while JPGs exist" || true
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exit 1
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fi
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adjusted=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$final_file")
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echo "Daily clip: $final_file ($adjusted s)"
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# Warn if clip duration deviates more than 0.5 s from target (float drift check)
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drift=$(echo "scale=3; $adjusted - $target_per_clip" | bc | sed 's/^-//')
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if awk "BEGIN{exit !($drift > 0.5)}"; then
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echo "WARNING: clip duration ${adjusted}s differs from target ${target_per_clip}s by ${drift}s"
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"$SCRIPT_DIR/notify.sh" "WARNING: [$CAM_NAME] $SEASON Mvt$MVT_NUM Day$DAY_OF_MVT duration drift ($yesterday)" \
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"Clip ${adjusted}s vs target ${target_per_clip}s (drift ${drift}s)" || true
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fi
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"$SCRIPT_DIR/notify.sh" "[$CAM_NAME] $SEASON Mvt$MVT_NUM Day$DAY_OF_MVT/$DAYS_IN_MVT saved ($yesterday)" \
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"$(basename "$final_file") — ${adjusted}s | $final_file" || true
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# ── Auto-trigger montage on last day of movement ──────────────────────────────
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if [ "$IS_LAST_DAY" = "true" ]; then
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echo "Last day of $SEASON Mvt $MVT_NUM — triggering montage compilation..."
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# Pass $yesterday so montage-mvt.sh looks up the correct movement
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# (running the next morning, "today" would already be the next movement).
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"$SCRIPT_DIR/montage-mvt.sh" "$CAM_NAME" "$yesterday"
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fi
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