Kapitel 13/Tutorial.md aktualisiert
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@@ -844,113 +844,112 @@ Das folgende Schaubild zeigt dir die konkrete Verkabelung
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## Schritt 4.1 – Analyse‑Skript anlegen
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## Schritt 4.1 – Analyse‑Skript anlegen
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**Ort:** Terminal im **Clipper‑LXC** → als Benutzer **`clipper`**
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**Ort:** Terminal im **Clipper‑LXC** → als Benutzer **`clipper`**
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Öffne das Skript und trage den Inhalt ein:
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Öffne die Datei und füge den Inhalt ein:
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```bash
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```bash
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nano /srv/clipper/bin/vod-analyze
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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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```
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Inhalt:
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Inhalt:
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```bash
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```bash
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#!/usr/bin/env bash
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#!/usr/bin/env bash
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set -euo pipefail
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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="${1:?need VOD id}"
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ID="${1:?need VOD id}"
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VOD_IN_MP4="${CLIPPER_IN}/${ID}.mp4"
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VOD_IN_MP4="/srv/clipper/temp/${ID}.mp4" # temporäre Datei (vom VOD aus NC heruntergeladen)
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OUT_BASE="${CLIPPER_OUT}/${ID}"
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OUT_BASE="${CLIPPER_OUT}/${ID}"
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ANALYSIS="${OUT_BASE}/analysis"
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ANALYSIS="${OUT_BASE}/analysis"
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LOGDIR="${CLIPPER_LOG}/${ID}"
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LOGDIR="${CLIPPER_LOG}/${ID}"
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mkdir -p "$ANALYSIS" "$LOGDIR"
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mkdir -p "$ANALYSIS" "$LOGDIR"
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exec > >(tee -a "${LOGDIR}/analyze.log") 2>&1
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exec > >(tee -a "${LOGDIR}/analyze.log") 2>&1
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echo "== Analyze $ID =="
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echo "== Analyze $ID =="
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# 1) Szenenwechsel
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# 1) Szenenwechsel
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ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
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ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
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-vf "scale=-2:360,select=gt(scene\,0.30),showinfo" -an -f null - \
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-vf "scale=-2:360,select=gt(scene\,0.30),showinfo" -an -f null - \
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2> "${LOGDIR}/sceneinfo.log"
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2> "${LOGDIR}/sceneinfo.log"
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# 2) Audio-Statistik
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# 2) Audio-Statistik
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ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
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ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
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-vn -ac 1 -ar 16000 \
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-vn -ac 1 -ar 16000 \
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-af "astats=metadata=1:reset=2,ametadata=print:key=lavfi.astats.Overall.RMS_level" \
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-af "astats=metadata=1:reset=2,ametadata=print:key=lavfi.astats.Overall.RMS_level" \
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-f null - \
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-f null - \
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2> "${LOGDIR}/astats.log" || true
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2> "${LOGDIR}/astats.log" || true
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# 3) Logs → candidates.json
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# 3) Logs → candidates.json
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ANALYSIS="$ANALYSIS" LOGDIR="$LOGDIR" python3 - <<'PY'
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ANALYSIS="$ANALYSIS" LOGDIR="$LOGDIR" python3 - <<'PY'
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import os,re,json
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import os,re,json
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out=os.environ["ANALYSIS"]; log=os.environ["LOGDIR"]
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out=os.environ["ANALYSIS"]; log=os.environ["LOGDIR"]
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scene_ts=[]
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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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with open(os.path.join(log,"sceneinfo.log"), errors="ignore") as f:
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for line in 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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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: scene_ts.append(float(m.group(1)))
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has_audio=False
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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(log,"astats.log")
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if os.path.exists(ap):
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if os.path.exists(ap):
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with open(ap, errors="ignore") as f:
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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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has_audio = "RMS_level" in f.read()
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cands=[{
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cands=[{
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"start": max(0.0,t-2.0),
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"start": max(0.0,t-2.0),
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"end": t+6.0,
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"end": t+6.0,
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"score": round(0.6+(0.1 if has_audio else 0),2),
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"score": round(0.6+(0.1 if has_audio else 0),2),
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"tags": ["scene-cut"] + (["audio-peak"] if has_audio else [])
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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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} 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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with open(os.path.join(out,"candidates.json"),"w",encoding="utf-8") as f:
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json.dump(cands,f,ensure_ascii=False,indent=2)
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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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print("Wrote", os.path.join(out,"candidates.json"))
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PY
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PY
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echo "== Done $ID =="
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echo "== Done $ID =="
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```
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Ausführbar machen:
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# cleanup temp VOD
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```bash
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echo "== Cleanup: remove temp file $VOD_IN_MP4 =="
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chmod +x /srv/clipper/bin/clipper-analyze
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rm -f "$VOD_IN_MP4"
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```
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```
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---
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---
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## Schritt 4.2 – n8n: Analyse starten
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## Schritt 4.2 – n8n: Analyse starten
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**Ort:** n8n‑Weboberfläche
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**Ort:** n8n‑Weboberfläche
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**SSH Node – Analyze VOD**
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**SSH Node – Analyze VOD**
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- **Credentials:** `SSH Clipper`
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- **Credentials:** `SSH Clipper`
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- **Working Dir:** `/srv/clipper`
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- **Working Dir:** `/srv/clipper`
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- **Command (Expression):**
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- **Command (Expression):**
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```js
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```js
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{{`/srv/clipper/bin/vod-analyze ${$json.data.id}`}}
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{{`/srv/clipper/bin/vod-analyze ${$json.data.id}`}}
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```
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```
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---
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---
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## Ergebnis
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## Ergebnis
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