Encoding: H.265 final montages, slow preset, sunrise retention
- sky-cam.conf: add ENCODE_PRESET=slow (applied to all encodes); split CRF_MONTAGE (intermediates, H.264) from CRF_MONTAGE_FINAL=22 (archive montage, H.265); add SUNRISE_RETENTION_DAYS=10; improve CAPTURE_INTERVAL comment with storage/density table - montage-mvt.sh: steps 1+2 use preset; step 3 final switches to libx265 + CRF_MONTAGE_FINAL + -tag:v hvc1 for broad compatibility - 4-seasons.sh: both encode steps use ENCODE_PRESET - daily_sunrise_video.sh: all encode steps use ENCODE_PRESET; rolling retention deletes sunrise videos older than SUNRISE_RETENTION_DAYS https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
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Claude
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-2
@@ -88,7 +88,7 @@ done > "$temp_file"
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echo "Step 1/2: encoding raw video..."
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ffmpeg -loglevel warning \
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-f concat -safe 0 -i "$temp_file" \
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-c:v libx264 -pix_fmt yuv420p -crf "$CRF_SEASONS_RAW" -vsync 2 -an \
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-c:v libx264 -pix_fmt yuv420p -preset "$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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@@ -102,7 +102,7 @@ final_file="$output_dir/${yesterday}_Mvt${MVT_NUM}-Day${DAY_OF_MVT}of${DAYS_IN_M
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if ! ffmpeg -loglevel warning \
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-i "$temp_video" \
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-vf "setpts=PTS/$speed_factor" \
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-c:v libx264 -pix_fmt yuv420p -crf "$CRF_SEASONS_FINAL" \
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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 "$final_file"
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+13
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@@ -110,7 +110,7 @@ raw_video=$(mktemp --suffix=.mp4)
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echo "Step 1/3: encoding raw video..."
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if ! ffmpeg -loglevel warning \
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-f concat -safe 0 -i "$temp_list" \
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-c:v libx264 -pix_fmt yuv420p -crf "$CRF_SUNRISE" -vsync 2 -an \
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-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_SUNRISE" -vsync 2 -an \
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-y "$raw_video"; then
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"$SCRIPT_DIR/notify.sh" "FAILED: sunrise step 1/3 (encode) $current_date" \
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"ffmpeg raw encode from images failed — check: journalctl -u sky-cam-sunrise.service" || true
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@@ -128,7 +128,7 @@ echo "Step 2/3: speed-adjust → $sped_video"
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if ! ffmpeg -loglevel warning \
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-i "$raw_video" \
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-vf "setpts=PTS/${speed_factor}" \
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-c:v libx264 -pix_fmt yuv420p -crf "$CRF_SUNRISE" -an \
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-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_SUNRISE" -an \
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-y "$sped_video"; then
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rm -f "$sped_video"
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"$SCRIPT_DIR/notify.sh" "FAILED: sunrise step 2/3 (speed) $current_date" \
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@@ -223,7 +223,7 @@ if [ -n "$DT" ]; then
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if ffmpeg -loglevel warning \
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-i "$work_video" \
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-vf "${DT}" \
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-c:v libx264 -pix_fmt yuv420p -crf "$CRF_SUNRISE" \
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-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_SUNRISE" \
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"${audio_out_flags[@]}" \
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-y "$final_video"; then
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step3b_ok=true
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@@ -253,4 +253,14 @@ if $step3b_ok; then
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[ -f "$cam_audio" ] && rm -f "$cam_audio"
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"$SCRIPT_DIR/notify.sh" "Sunrise ready: $current_date" \
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"$(basename "$final_video") — ${actual_dur}s, sunrise at ${SR_TIME}" || true
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# ── Rolling retention: delete sunrise videos older than SUNRISE_RETENTION_DAYS ─
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retain="${SUNRISE_RETENTION_DAYS:-10}"
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if [ "$retain" -gt 0 ]; then
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deleted_old=$(find "$MOVIES_DIR/$CAM_NAME" \
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-path "*/sunrise-only/*-daily-sunrise.mp4" \
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-mtime +"$retain" -print -delete 2>/dev/null | wc -l)
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[ "$deleted_old" -gt 0 ] && \
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echo "Retention: deleted $deleted_old sunrise video(s) older than ${retain} days"
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fi
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fi
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@@ -133,7 +133,7 @@ ffmpeg -loglevel warning \
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-f concat -safe 0 -i "$concat_list" \
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-vf "scale=${VIDEO_W}:${VIDEO_H}:force_original_aspect_ratio=decrease,\
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pad=${VIDEO_W}:${VIDEO_H}:(ow-iw)/2:(oh-ih)/2,setsar=1" \
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-c:v libx264 -pix_fmt yuv420p -crf "$CRF_MONTAGE" -an \
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-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_MONTAGE" -an \
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-y "$temp_concat"
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# ── Step 2: Speed-adjust — saved permanently so music/overlay failure is recoverable ─
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@@ -146,7 +146,7 @@ sped_file="$output_dir/${MVT_START}_${SEASON}_Mvt${MVT_NUM}-Sped.mp4"
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if ! ffmpeg -loglevel warning \
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-i "$temp_concat" \
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-vf "setpts=PTS/$speed_factor" \
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-c:v libx264 -pix_fmt yuv420p -crf "$CRF_MONTAGE" -an \
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-c:v libx264 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_MONTAGE" -an \
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-t "$music_duration" -y "$sped_file"; then
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rm -f "$sped_file"
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"$SCRIPT_DIR/notify.sh" "FAILED: montage step 2/3 (speed) $SEASON Mvt$MVT_NUM ($ASTRO_YEAR)" \
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@@ -198,7 +198,8 @@ if ffmpeg -loglevel warning \
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"[0:v]fade=t=in:st=0:d=${FADE_DUR},fade=t=out:st=${fade_out_start}:d=${FADE_DUR},${DT}[vout];\
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[1:a]afade=t=in:st=0:d=${FADE_DUR},afade=t=out:st=${fade_out_start}:d=${FADE_DUR}[aout]" \
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-map "[vout]" -map "[aout]" \
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-c:v libx264 -pix_fmt yuv420p -c:a aac -b:a "$AUDIO_BITRATE" \
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-c:v libx265 -pix_fmt yuv420p -preset "$ENCODE_PRESET" -crf "$CRF_MONTAGE_FINAL" \
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-tag:v hvc1 -c:a aac -b:a "$AUDIO_BITRATE" \
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-t "$music_duration" -y "$output_file"; then
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rm -f "$sped_file"
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echo "Done: $output_file"
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+23
-12
@@ -217,20 +217,28 @@ SUNRISE_TARGET_SECS=10
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SUNRISE_OVERLAY_ENABLED=true
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# Opacity of the sunrise-time text (0.0 = invisible, 1.0 = fully opaque).
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SUNRISE_OVERLAY_OPACITY=0.45
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# Delete daily sunrise videos older than this many days (rolling window).
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# Set 0 to keep forever.
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SUNRISE_RETENTION_DAYS=10
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# ── Video encoding quality ────────────────────────────────────────────────────
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# FFmpeg CRF: lower = higher quality / larger files. Typical range 18–30.
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# 18 ≈ visually lossless 23 = ffmpeg default 28 = smaller/lower
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# Different scripts use different defaults by design — intermediate/draft
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# encodings use a higher CRF (smaller files, quality less critical), while
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# final "polished" outputs use a lower CRF for better quality.
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# Each is independent — changing one does NOT change the others.
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# H.265 (libx265) CRF is not directly comparable — H.265 CRF 22 ≈ H.264 CRF 26
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# in visual quality but ~40-50% smaller file. Final montages use H.265;
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# intermediates (deleted after use) stay H.264.
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#
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CRF_SUNRISE=28 # daily_sunrise_video.sh — daily Mattermost upload
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CRF_SEASONS_RAW=28 # 4-seasons.sh — raw concat before speed-adjust
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CRF_SEASONS_FINAL=26 # 4-seasons.sh — final daily clip (goes into montage)
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CRF_MONTAGE=26 # montage-mvt.sh — concat and speed-adjust and final
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AUDIO_BITRATE=192k # montage-mvt.sh — music track on movement montages
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# ENCODE_PRESET: slow = better compression, same CRF quality, ~2× encode time.
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# Use 'medium' on slower machines, 'slow' or 'slower' on fast ones.
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# All encodes run at night so 'slow' is the right default.
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#
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CRF_SUNRISE=28 # daily_sunrise_video.sh — daily Mattermost upload (H.264)
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CRF_SEASONS_RAW=28 # 4-seasons.sh — raw concat before speed-adjust (H.264)
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CRF_SEASONS_FINAL=26 # 4-seasons.sh — final daily clip (goes into montage) (H.264)
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CRF_MONTAGE=28 # montage-mvt.sh — intermediate concat + sped steps (H.264)
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CRF_MONTAGE_FINAL=22 # montage-mvt.sh — final archive montage (H.265)
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ENCODE_PRESET=slow # ffmpeg preset for all encodes (slow/medium/fast)
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AUDIO_BITRATE=192k # montage-mvt.sh — music track on movement montages
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# ── Montage attribution overlay ───────────────────────────────────────────────
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# A translucent bar across the top of each movement montage, naming the
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@@ -254,12 +262,15 @@ MONTAGE_ATTR_FADE=1 # attribution fade-in and fade-out length (seconds)
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# CAM_RTSP_<cam> goes in .env (see bottom of this file), not here.
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# Seconds between captured frames (applies to all cameras).
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# 10 = one frame every 10 s → 8640 frames/day → good timelapse density.
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# Lower = smoother timelapse + larger storage footprint:
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# 10 s → 8,640 frames/day ~2.5 GB/day (default, good balance)
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# 5 s → 17,280 frames/day ~5 GB/day (smoother motion)
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# 2 s → 43,200 frames/day ~12 GB/day (very smooth, high storage)
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# CAPTURE_STALE_SECS should always be at least 2× CAPTURE_INTERVAL.
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CAPTURE_INTERVAL=10
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# Seconds without a new frame before the watchdog sends a stall notification.
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# Should be at least 2× CAPTURE_INTERVAL. A recovery notification fires
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# automatically when frames start arriving again.
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# A recovery notification fires automatically when capture resumes.
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CAPTURE_STALE_SECS=30
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# ── Sunrise audio capture ──────────────────────────────────────────────────────
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