Kapitel 13/Tutorial.md aktualisiert
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@@ -568,16 +568,12 @@ In diesem Schritt erstellen wir den eigentlichen Workflow in **n8n**. Er sorgt d
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TMP="${CLIPPER_TMP:-/srv/clipper/temp}"
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OUT_BASE="${CLIPPER_OUT:-/srv/clipper/out}/${ID}"
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LOGDIR="/srv/clipper/logs/${ID}"
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LOGDIR="${CLIPPER_LOG:-/srv/clipper/logs}/${ID}"
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FILE="${TMP}/${ID}.mp4"
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TEMP="${TMP}/${ID}.temp.mp4"
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PART="${TMP}/${ID}.mp4.part"
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LOCK="${TMP}/${ID}.lock"
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DROP_BASE="${SFTP_DROP_BASE:-incoming}"
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REMOTE_DIR="${DROP_BASE}/${ID}"
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REMOTE_FILE="${REMOTE_DIR}/${ID}.mp4"
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mkdir -p "$TMP" "$LOGDIR" "$OUT_BASE"
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LOG="${LOGDIR}/download.log"
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log(){ printf '[%(%F %T)T] %s\n' -1 "$*" ; }
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@@ -590,29 +586,9 @@ In diesem Schritt erstellen wir den eigentlichen Workflow in **n8n**. Er sorgt d
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fi
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trap 'flock -u 9; rm -f "$LOCK"' EXIT
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SFTP_OPTS=(-i "${SFTP_KEY}" -P "${SFTP_PORT:-22}" -oBatchMode=yes -oStrictHostKeyChecking=accept-new)
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SFTP_TARGET="${SFTP_USER}@${SFTP_HOST}"
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sftp_batch() {
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local cmds
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cmds=$(printf "%s\n" "$@")
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sftp "${SFTP_OPTS[@]}" "${SFTP_TARGET}" <<< "$cmds"
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}
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exists_remote_file() {
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local out
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out=$(sftp "${SFTP_OPTS[@]}" "${SFTP_TARGET}" <<< "ls -l ${REMOTE_FILE}" 2>&1 || true)
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[[ "$out" != *"No such file"* ]] && [[ "$out" != *"not found"* ]]
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}
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log "=== Start VOD ${ID} ==="
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log "=== START: VOD ${ID} ==="
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log "URL: ${URL}"
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log "DROP: ${REMOTE_FILE}"
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if exists_remote_file; then
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log "SKIP: ${REMOTE_FILE} existiert bereits"
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exit 0
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fi
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log "TMP: ${TMP}"
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if [[ -s "$TEMP" && ! -s "$FILE" ]]; then
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log "RESUME: $TEMP -> $FILE"
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@@ -630,27 +606,13 @@ In diesem Schritt erstellen wir den eigentlichen Workflow in **n8n**. Er sorgt d
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exit 10
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fi
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sftp_batch "mkdir ${DROP_BASE}" "mkdir ${REMOTE_DIR}"
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FINAL_DIR="${OUT_BASE}/original"
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mkdir -p "$FINAL_DIR"
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mv -f "$FILE" "$FINAL_DIR/${ID}.mp4"
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log "MOVE: ${FILE} -> ${FINAL_DIR}/${ID}.mp4"
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tries=0
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until exists_remote_file; do
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tries=$((tries+1))
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log "UPLOAD Try #$tries: $FILE -> ${REMOTE_FILE}"
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sftp_batch "reput ${FILE} ${REMOTE_FILE}" "put ${FILE} ${REMOTE_FILE}" || true
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sleep $((2*tries))
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[[ $tries -ge 5 ]] && break
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done
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log "=== DONE: VOD ${ID} erfolgreich geladen ==="
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if ! exists_remote_file; then
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log "ERROR: Upload fehlgeschlagen"
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exit 20
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fi
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rm -f "$PART" "$TEMP" || true
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log "CLEANUP: $TMP"
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rm -rf "${TMP:?}/"*
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log "=== Done VOD ${ID} ==="
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```
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Mit diesem Skript laden wir die aktuellen VODs herunter, laden sie in die Nextcloud für die weitere Verabeitung und räumen wieder auf. Zusätzlich erzeugen wir logs in `<clipper-ordner>/logs/<ID>.log`.
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@@ -837,64 +799,71 @@ Das folgende Schaubild zeigt dir die konkrete Verkabelung
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**Ort:** Terminal im **Clipper‑LXC** → als Benutzer **clipper**
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Öffne die Datei und füge den Inhalt ein:
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```bash
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nano /srv/clipper/bin/vod-analyze # (dieses Skript wird das VOD analysieren und candidates.json erzeugen)
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```
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Inhalt:
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```bash
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#!/usr/bin/env bash
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set -euo pipefail
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. /etc/clipper/clipper.env
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. /etc/clipper/clipper.env
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ID="${1:?need VOD id}"
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VOD_IN_MP4="/srv/clipper/temp/${ID}.mp4" # temporäre Datei (vom VOD aus NC heruntergeladen)
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VOD_IN_MP4="${CLIPPER_OUT}/${ID}/original/${ID}.mp4"
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OUT_BASE="${CLIPPER_OUT}/${ID}"
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ANALYSIS="${OUT_BASE}/analysis"
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LOGDIR="${CLIPPER_LOG}/${ID}"
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mkdir -p "$ANALYSIS" "$LOGDIR"
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exec > >(tee -a "${LOGDIR}/analyze.log") 2>&1
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echo "== Analyze $ID =="
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# 1) Szenenwechsel
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echo "[FFMPEG] Szenewechselanalyse läuft..."
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ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
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-vf "scale=-2:360,select=gt(scene\,0.30),showinfo" -an -f null - \
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2> "${LOGDIR}/sceneinfo.log"
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# 2) Audio-Statistik
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echo "[FFMPEG] Audiostatistik läuft..."
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ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
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-vn -ac 1 -ar 16000 \
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-af "astats=metadata=1:reset=2,ametadata=print:key=lavfi.astats.Overall.RMS_level" \
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-f null - \
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2> "${LOGDIR}/astats.log" || true
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# 3) Logs → candidates.json
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ANALYSIS="$ANALYSIS" LOGDIR="$LOGDIR" python3 - <<'PY'
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import os,re,json
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out=os.environ["ANALYSIS"]; log=os.environ["LOGDIR"]
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import os, re, json, sys
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from datetime import datetime
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def log(msg):
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timestamp = datetime.now().strftime("%F %T")
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print(f"[PY] [{timestamp}] {msg}")
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out = os.environ["ANALYSIS"]
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logdir = os.environ["LOGDIR"]
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scene_ts = []
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with open(os.path.join(log,"sceneinfo.log"), errors="ignore") as f:
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log("Lese sceneinfo.log...")
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try:
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with open(os.path.join(logdir, "sceneinfo.log"), errors="ignore") as f:
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for line in f:
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m = re.search(r"pts_time:([0-9]+(?:\.[0-9]+)?)", line)
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if m: scene_ts.append(float(m.group(1)))
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if m:
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scene_ts.append(float(m.group(1)))
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except Exception as e:
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log(f"Fehler beim Lesen von sceneinfo.log: {e}")
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sys.exit(1)
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log(f"{len(scene_ts)} Szenenwechsel gefunden.")
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has_audio = False
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ap=os.path.join(log,"astats.log")
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ap = os.path.join(logdir, "astats.log")
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if os.path.exists(ap):
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log("Prüfe astats.log auf Audiodaten...")
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with open(ap, errors="ignore") as f:
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has_audio = "RMS_level" in f.read()
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log(f"Audioanalyse: {'gefunden' if has_audio else 'nicht vorhanden'}")
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cands = [{
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"start": max(0.0, t - 2.0),
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@@ -903,32 +872,17 @@ Das folgende Schaubild zeigt dir die konkrete Verkabelung
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"tags": ["scene-cut"] + (["audio-peak"] if has_audio else [])
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} for t in scene_ts]
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with open(os.path.join(out,"candidates.json"),"w",encoding="utf-8") as f:
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target = os.path.join(out, "candidates.json")
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try:
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with open(target, "w", encoding="utf-8") as f:
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json.dump(cands, f, ensure_ascii=False, indent=2)
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print("Wrote", os.path.join(out,"candidates.json"))
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log(f"{len(cands)} Kandidaten gespeichert → {target}")
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except Exception as e:
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log(f"Fehler beim Schreiben von candidates.json: {e}")
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sys.exit(2)
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PY
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echo "== Done $ID =="
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# cleanup temp VOD
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echo "== Cleanup: remove temp file $VOD_IN_MP4 =="
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rm -f "$VOD_IN_MP4"
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```
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### Schritt 4.2 – n8n: Analyse starten
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**Ort:** n8n‑Weboberfläche
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**SSH Node – Analyze VOD**
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- **Credentials:** `SSH Clipper`
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- **Working Dir:** `/srv/clipper`
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- **Command (Expression):**
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```js
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{{`/srv/clipper/bin/vod-analyze ${$json.data.id}`}}
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```
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### Ergebnis
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