sky-cam-frigate: source frames from Frigate's restream, not an export API
The real sky-cam repo's capture.sh already replaces MotionEye/any NVR itself (plain ffmpeg RTSP frame-grab) - it and daily_sunrise_video.sh's optional audio capture are the only places that touch a camera's RTSP URL directly. Every other script (4-seasons, montage-mvt, year-end-join, moon-track, moon-phase-monthly) only reads JPEGs/audio already on disk. So the entire motionEye->Frigate transition is pointing CAM_RTSP_<cam> at Frigate's go2rtc restream (rtsp://<frigate-host>:8554/<cam>) instead of the camera directly - no upstream script changes needed. Replaces the previous frigate-retime.sh/export-API approach, which solved a problem (matching an arbitrary recording length to music duration) that sky-cam's own 4-seasons.sh/montage-mvt.sh already handle via JPEG frame counts.
This commit is contained in:
Claude
+85
-173
@@ -1,43 +1,38 @@
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#!/bin/bash
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# services/sky-cam-frigate.sh — Automated sky / timelapse camera scripts,
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# sourced from Frigate recordings instead of raw JPEG image folders.
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# services/sky-cam-frigate.sh — Automated sky / timelapse camera scripts
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# (sky-cam), configured to source frames from Frigate instead of a camera's
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# RTSP stream directly.
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# Part of the modular post-install system (sourced by setup.sh).
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#
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# Can also be run standalone on any machine:
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# sudo bash sky-cam-frigate.sh
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# (Docker must already be installed when run standalone; Frigate should
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# already be configured — see services/frigate.sh — with continuous
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# recording enabled for the cameras you want timelapses from.)
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# already be configured with the cameras you want — see services/frigate.sh.)
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#
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# NON-DOCKER module. Duplicate of sky-cam.sh, adapted so the timelapse
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# source is Frigate's recordings (via its HTTP export API) rather than a
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# directory of per-frame JPEGs dropped by motionEye. Produces the same
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# outputs sky-cam always has:
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# • Daily sunrise clip — speed-adjusted video, uploaded to Mattermost
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# • Four Seasons timelapse — daily clips sized to Vivaldi movements' music
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# • Full-day timelapse — fixed-length timelapse of the day's recording
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# • Moon-track timelapse — moon tracked & cropped each visible night
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# • Monthly moon-phase close-ups — NASA Dial-a-Moon images posted to MM
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# NON-DOCKER module — this is the exact same upstream sky-cam project as
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# services/sky-cam.sh (same clone, same scripts, same systemd timers). The
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# only difference is what CAM_RTSP_<cam> points to in .env:
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#
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# sky-cam.sh CAM_RTSP_<cam> = the camera's own RTSP URL directly
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# sky-cam-frigate.sh CAM_RTSP_<cam> = Frigate's go2rtc restream for that
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# camera (rtsp://<frigate-host>:8554/<cam>)
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#
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# Why this is the only change needed: sky-cam's capture.sh is itself a
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# from-scratch RTSP frame-grabber that "replaces MotionEye or any NVR" (its
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# own header comment) — it pulls one JPEG frame every CAPTURE_INTERVAL
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# seconds from whatever CAM_RTSP_<cam> points to and writes it to
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# BASE_DIR/<cam>/YYYY-MM-DD/HH-MM-SS.jpg. Every other script in the pipeline
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# (4-seasons.sh, montage-mvt.sh, year-end-join.sh, moon-track.sh,
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# moon-phase-monthly.sh, daily_sunrise_video.sh) only ever reads JPEGs/audio
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# already sitting in BASE_DIR — none of them know or care whether the camera
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# was reached directly or through Frigate's restream. Pointing capture.sh at
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# Frigate's go2rtc endpoint instead of the camera means Frigate stays the
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# single RTSP client against the camera (recording + detection), and sky-cam
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# becomes a second, cheap consumer of Frigate's already-open stream — no
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# upstream sky-cam script edits required.
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#
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# Source: https://github.com/outis1one/sky-cam (cloned via bootstrap.sh)
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# Installs systemd user timers via sky-cam's install.sh.
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#
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# Frigate integration: since Frigate stores recordings in its own rolling
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# storage rather than per-frame JPEGs, this installer wires up a
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# frigate-retime.sh helper (dropped alongside the cloned sky-cam scripts)
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# that:
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# 1. Requests a coarse timelapse export from Frigate's API for a given
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# start/end window (Frigate stitches its continuous-recording segments
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# together for you — no manual concatenation needed).
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# 2. ffprobes the exported clip's *actual* duration (never trusts the
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# requested export speed — hardware-accelerated exports can silently
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# fall back to realtime).
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# 3. Computes the exact speed factor needed to hit a target duration
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# (e.g. a Vivaldi movement's runtime) and re-encodes once with
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# `setpts=PTS/factor`, hard-clipped with `-t <target>` and the music
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# muxed in.
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# The daily/moon/four-seasons timer scripts call this helper instead of
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# assembling JPEGs directly.
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# Installs systemd user timers via sky-cam's own install.sh.
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# ── Standalone bootstrap ──────────────────────────────────────────────────────
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# Detected when the script is executed directly rather than sourced by setup.sh.
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@@ -102,94 +97,19 @@ if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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fi
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# ─────────────────────────────────────────────────────────────────────────────
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register_service sky-cam-frigate cameras "Automated sky / timelapse camera scripts sourced from Frigate recordings (sky-cam + Frigate)"
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register_service sky-cam-frigate cameras "Automated sky / timelapse camera scripts sourced from Frigate's restream instead of RTSP directly (sky-cam + Frigate)"
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# Writes $SKYCAM_DIR/frigate-retime.sh — see header comment in that file for
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# the export/measure/retime algorithm. Not part of the upstream sky-cam repo,
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# so it's safe from being clobbered by `git pull` there (different filename).
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_write_frigate_retime_helper() {
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local dir="$1"
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cat > "$dir/frigate-retime.sh" << 'RETIME'
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#!/bin/bash
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# frigate-retime.sh — Export a Frigate timelapse for a time window and
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# re-time it to hit an exact target duration (e.g. a music track's length).
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#
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# Frigate's export API only offers fixed-speed presets (e.g. timelapse_25x),
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# so two source windows of different real-world length come out at
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# different durations. To land on an exact target (a Vivaldi movement's
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# runtime, a fixed "full day" length, etc.) this script:
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# 1. Requests a coarse export from Frigate covering start..end.
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# 2. Measures what actually came out with ffprobe — never trusts the
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# requested speed, since hardware-accelerated exports can silently
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# fall back to realtime.
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# 3. Computes the exact speed factor to hit the target and re-encodes
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# once with setpts=PTS/factor, hard-clipped to the target length.
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#
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# Usage:
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# frigate-retime.sh <camera> <start_unix> <end_unix> <target_seconds> \
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# <output.mp4> [audio_file]
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#
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# Requires FRIGATE_URL and FRIGATE_EXPORT_DIR in the environment (sky-cam's
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# .env sets these — source it before calling, or run via sky-cam's timers
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# which already do).
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set -euo pipefail
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CAMERA="${1:?camera name required}"
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START="${2:?start unix timestamp required}"
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END="${3:?end unix timestamp required}"
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TARGET="${4:?target duration in seconds required}"
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OUT="${5:?output path required}"
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AUDIO="${6:-}"
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: "${FRIGATE_URL:?Set FRIGATE_URL (e.g. http://localhost:5000)}"
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: "${FRIGATE_EXPORT_DIR:?Set FRIGATE_EXPORT_DIR (host path to Frigate's media/exports)}"
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NAME="skycam_$(date +%s)_$$"
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log() { echo "[frigate-retime] $*"; }
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# 1. Kick off a coarse timelapse export covering the window. Frigate
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# stitches together whatever continuous-recording segments fall in
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# start..end — no manual concatenation needed on our end.
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log "Requesting export for ${CAMERA} ${START}..${END} (name=${NAME})"
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curl -fsS -H "Content-Type: application/json" -X POST \
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-d "{\"playback\": \"timelapse_25x\", \"name\": \"${NAME}\"}" \
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"${FRIGATE_URL}/api/export/${CAMERA}/start/${START}/end/${END}" > /dev/null
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# 2. Wait for the export file to land in Frigate's media volume on disk.
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COARSE=""
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for _ in $(seq 1 120); do
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COARSE="$(find "$FRIGATE_EXPORT_DIR" -maxdepth 1 -iname "*${NAME}*.mp4" -print -quit 2>/dev/null || true)"
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[ -n "$COARSE" ] && break
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sleep 5
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done
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[ -n "$COARSE" ] || { log "ERROR: export ${NAME} never appeared in ${FRIGATE_EXPORT_DIR}"; exit 1; }
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log "Coarse export ready: $COARSE"
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# 3. Measure the actual duration — this is what makes the retime exact
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# regardless of what speed Frigate actually delivered.
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ACTUAL_SECONDS="$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$COARSE")"
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log "Coarse export duration: ${ACTUAL_SECONDS}s — target: ${TARGET}s"
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# 4. Compute the speed factor and re-encode once, hard-clipped to target.
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FACTOR="$(echo "$ACTUAL_SECONDS / $TARGET" | bc -l)"
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log "Speed factor: ${FACTOR}x"
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if [ -n "$AUDIO" ]; then
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ffmpeg -y -i "$COARSE" -i "$AUDIO" \
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-filter:v "setpts=PTS/${FACTOR}" -r 30 \
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-map 0:v -map 1:a -shortest -t "$TARGET" \
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-c:v libx264 -c:a aac "$OUT"
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else
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ffmpeg -y -i "$COARSE" \
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-filter:v "setpts=PTS/${FACTOR}" -r 30 -t "$TARGET" \
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-an -c:v libx264 "$OUT"
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fi
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rm -f "$COARSE"
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log "Wrote $OUT"
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RETIME
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chmod +x "$dir/frigate-retime.sh"
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# Prints space-separated camera names parsed from an existing Frigate
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# config.yml's top-level `cameras:` block. Best-effort only — same 2-space
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# indent assumption services/frigate.sh's own parser relies on.
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_skycam_frigate_detect_cameras() {
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local cfg="$1"
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[ -f "$cfg" ] || return 0
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awk '
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/^cameras:/ { in_cams=1; next }
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in_cams && /^[a-zA-Z]/ { in_cams=0 }
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in_cams && /^ [a-z0-9_]+:[[:space:]]*$/ { gsub(/[: ]/, ""); print }
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' "$cfg" | tr '\n' ' '
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}
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install_sky-cam-frigate() {
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@@ -199,10 +119,11 @@ install_sky-cam-frigate() {
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echo "[DRY-RUN] sky-cam-frigate would:"
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echo " - Install: ffmpeg bc fonts-dejavu curl python3-pip"
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echo " - pip install: suntime pytz requests skyfield Pillow numpy scipy"
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echo " - Clone sky-cam to $SKYCAM_DIR via bootstrap.sh (shared with sky-cam.sh)"
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echo " - Drop frigate-retime.sh into $SKYCAM_DIR (export + exact-duration retime helper)"
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echo " - Detect an existing Frigate install (\$DOCKER_DIR/frigate/.env) for URL/export dir defaults"
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echo " - Write FRIGATE_URL / FRIGATE_EXPORT_DIR / camera names into .env"
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echo " - Clone sky-cam to $SKYCAM_DIR via bootstrap.sh (same repo as sky-cam.sh)"
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echo " - Detect cameras from an existing Frigate config.yml, if present"
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echo " - Write CAM_RTSP_<cam>=rtsp://<frigate-host>:8554/<cam> into .env"
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echo " (Frigate's go2rtc restream, instead of the camera's own RTSP URL)"
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echo " - Edit sky-cam.conf with your location and camera names"
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echo " - Copy .env.example → .env and set Mattermost credentials"
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echo " - Run ./install.sh to register systemd user timers"
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return 0
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@@ -213,8 +134,9 @@ install_sky-cam-frigate() {
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echo "║ sky-cam + Frigate — Sky & Timelapse Camera System ║"
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echo "╚═══════════════════════════════════════════════════════╝"
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echo ""
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log_info "This variant sources footage from Frigate's recordings via its"
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log_info "export API, instead of a folder of per-frame JPEGs."
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log_info "This is the same sky-cam project as services/sky-cam.sh — the only"
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log_info "difference is CAM_RTSP_<cam> points at Frigate's restream instead of"
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log_info "the camera directly, so Frigate stays the single RTSP client per camera."
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echo ""
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# ── System packages ──────────────────────────────────────────────────────
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@@ -245,30 +167,20 @@ install_sky-cam-frigate() {
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fi
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# ── Frigate detection ────────────────────────────────────────────────────
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local FRIGATE_ENV="$DOCKER_DIR/frigate/.env"
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local DEFAULT_FRIGATE_URL="http://localhost:5000"
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local DEFAULT_EXPORT_DIR=""
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if [ -f "$FRIGATE_ENV" ]; then
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log_success "Found existing Frigate install at $DOCKER_DIR/frigate"
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local _frigate_media
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_frigate_media="$(grep -E '^FRIGATE_MEDIA=' "$FRIGATE_ENV" | head -1 | cut -d= -f2-)"
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[ -n "$_frigate_media" ] && DEFAULT_EXPORT_DIR="$_frigate_media/exports"
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local FRIGATE_CFG="$DOCKER_DIR/frigate/config/config.yml"
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local DEFAULT_CAMS="east"
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local FRIGATE_HOST="127.0.0.1"
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if [ -f "$FRIGATE_CFG" ]; then
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log_success "Found existing Frigate config at $DOCKER_DIR/frigate"
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local _detected
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_detected="$(_skycam_frigate_detect_cameras "$FRIGATE_CFG")"
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[ -n "$_detected" ] && DEFAULT_CAMS="$_detected"
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else
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log_warning "No Frigate install found at $DOCKER_DIR/frigate — run services/frigate.sh first,"
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log_warning "or enter its URL/export path manually below."
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log_warning "No Frigate config found at $DOCKER_DIR/frigate — run services/frigate.sh first"
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log_warning "if Frigate isn't configured yet. Camera names below must match Frigate's"
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log_warning "config.yml camera keys once it is, or capture.sh will connect to nothing."
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fi
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echo ""
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log_info "Frigate connection"
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local FRIGATE_URL="" FRIGATE_EXPORT_DIR=""
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prompt_text " Frigate URL [$DEFAULT_FRIGATE_URL]:" "$DEFAULT_FRIGATE_URL" FRIGATE_URL
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prompt_text " Frigate export directory on this host [${DEFAULT_EXPORT_DIR:-required}]:" \
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"$DEFAULT_EXPORT_DIR" FRIGATE_EXPORT_DIR
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if [ -z "$FRIGATE_EXPORT_DIR" ]; then
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log_warning "No export directory set — frigate-retime.sh will fail until FRIGATE_EXPORT_DIR is set in .env"
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fi
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# ── Essential configuration ──────────────────────────────────────────────
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echo ""
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log_info "Location and camera configuration"
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echo " sky-cam needs your GPS coordinates and timezone to calculate"
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@@ -282,10 +194,18 @@ install_sky-cam-frigate() {
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echo ""
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echo " Camera names must match the camera keys configured in Frigate's"
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echo " config.yml (services/frigate.sh), e.g.: east north south west"
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echo " config.yml (services/frigate.sh)."
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echo ""
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prompt_text " Frigate camera names (space-separated) [east]:" "east" CAMERAS_LIST
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prompt_text " Sunrise camera (faces east) [east]:" "east" SUNRISE_CAM
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prompt_text " Camera names (space-separated) [$DEFAULT_CAMS]:" "$DEFAULT_CAMS" CAMERAS_LIST
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local _default_sunrise; _default_sunrise="$(awk '{print $1}' <<< "$CAMERAS_LIST")"
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prompt_text " Sunrise camera (faces east) [$_default_sunrise]:" "$_default_sunrise" SUNRISE_CAM
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echo ""
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log_info "Frigate connection"
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echo " sky-cam's capture.sh runs directly on this host and connects to"
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echo " Frigate's go2rtc RTSP restream (port 8554) instead of the camera."
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echo ""
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prompt_text " Frigate host [$FRIGATE_HOST]:" "$FRIGATE_HOST" FRIGATE_HOST
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# Prompt for Mattermost credentials
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echo ""
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@@ -312,11 +232,13 @@ install_sky-cam-frigate() {
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echo "LONGITUDE=${LONGITUDE:-0.0000}"
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echo "TIMEZONE=${TIMEZONE:-America/New_York}"
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echo ""
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echo "# Frigate is the recording source for this variant — see"
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echo "# frigate-retime.sh for how clips are exported and re-timed to an"
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echo "# exact target duration (e.g. a music movement's runtime)."
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echo "FRIGATE_URL=${FRIGATE_URL:-$DEFAULT_FRIGATE_URL}"
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echo "FRIGATE_EXPORT_DIR=${FRIGATE_EXPORT_DIR}"
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echo "# Frigate's go2rtc restream stands in for each camera's direct RTSP"
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echo "# URL — Frigate stays the only RTSP client against the camera itself."
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for _cam in $CAMERAS_LIST; do
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local _var; _var="CAM_RTSP_${_cam}"
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echo "${_var}=rtsp://${FRIGATE_HOST}:8554/${_cam}"
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done
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echo ""
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if [ -n "$MM_WEBHOOK" ]; then
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echo "MM_WEBHOOK_URL=${MM_WEBHOOK}"
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echo "MM_CHANNEL=${MM_CHANNEL:-sky-cam}"
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@@ -333,17 +255,12 @@ install_sky-cam-frigate() {
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log_info "Patching sky-cam.conf with location and camera names..."
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local CAM_ARRAY="(${CAMERAS_LIST})"
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sed -i "s|^CAMERAS=.*|CAMERAS=${CAM_ARRAY}|" "$CONF"
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sed -i "s|^SUNRISE_CAM=.*|SUNRISE_CAM=${SUNRISE_CAM:-east}|" "$CONF"
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sed -i "s|^SUNRISE_CAM=.*|SUNRISE_CAM=${SUNRISE_CAM}|" "$CONF"
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log_success "sky-cam.conf updated"
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else
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log_warning "sky-cam.conf not found — check $SKYCAM_DIR"
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fi
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# ── Frigate export/retime helper ─────────────────────────────────────────
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log_info "Writing frigate-retime.sh helper to $SKYCAM_DIR..."
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_write_frigate_retime_helper "$SKYCAM_DIR"
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log_success "frigate-retime.sh installed"
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chown -R "$ACTUAL_USER:$ACTUAL_USER" "$SKYCAM_DIR" 2>/dev/null || true
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# ── Install systemd timers ────────────────────────────────────────────────
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@@ -363,28 +280,23 @@ install_sky-cam-frigate() {
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echo "═══════════════════════════════════════════════════════"
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echo ""
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echo " Location: $SKYCAM_DIR"
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echo " Frigate URL: ${FRIGATE_URL:-$DEFAULT_FRIGATE_URL}"
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echo " Export dir: ${FRIGATE_EXPORT_DIR:-<not set>}"
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echo " Frigate: rtsp://${FRIGATE_HOST}:8554/<camera>"
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echo " Cameras: $CAMERAS_LIST"
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echo " Timezone: ${TIMEZONE:-America/New_York}"
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echo ""
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echo " Next steps:"
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echo " 1. Review $SKYCAM_DIR/sky-cam.conf — schedules, encoding settings"
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echo " 2. sky-cam's own timer scripts still assemble from JPEGs by default;"
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echo " point the ones you want Frigate-backed (daily sunrise, four"
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echo " seasons, full-day, moon-track) at frigate-retime.sh — see its"
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echo " header comment for the exact usage/args."
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echo " 3. Put your Vivaldi Four Seasons audio files in:"
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echo " 1. Review $SKYCAM_DIR/sky-cam.conf"
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echo " — schedules, encoding settings, moon-job thresholds"
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echo " 2. Put your Vivaldi Four Seasons audio files in:"
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echo " $SKYCAM_DIR/music/"
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echo " 4. Verify systemd timers:"
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echo " 3. Confirm frames are landing:"
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echo " systemctl --user status sky-cam-capture-${SUNRISE_CAM}.service"
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echo " ls $SKYCAM_DIR/data/${SUNRISE_CAM}/\$(date +%Y-%m-%d)/"
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echo " 4. Verify all timers:"
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echo " systemctl --user list-timers 'sky-cam-*'"
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echo " 5. Credentials → $SKYCAM_DIR/.env"
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echo ""
|
||||
echo " Test the export/retime helper manually:"
|
||||
echo " cd $SKYCAM_DIR && source .env && ./frigate-retime.sh east \\"
|
||||
echo " \$(date -d 'today 06:00' +%s) \$(date -d 'today 08:00' +%s) 30 test.mp4"
|
||||
echo ""
|
||||
echo " Logs:"
|
||||
echo " journalctl --user -u sky-cam-capture-${SUNRISE_CAM}.service -f"
|
||||
echo " journalctl --user -u sky-cam-sunrise.service -f"
|
||||
echo ""
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user