Kapitel 13/Tutorial.md aktualisiert

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2025-09-17 08:53:17 +00:00
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@@ -801,88 +801,85 @@ Das folgende Schaubild zeigt dir die konkrete Verkabelung
```bash ```bash
#!/usr/bin/env bash #!/usr/bin/env bash
set -euo pipefail set -euo pipefail
. /etc/clipper/clipper.env . /etc/clipper/clipper.env
ID="${1:?need VOD id}" ID="${1:?need VOD id}"
VOD_IN_MP4="${CLIPPER_OUT}/${ID}/original/${ID}.mp4" VOD_IN_MP4="${CLIPPER_OUT}/${ID}/original/${ID}.mp4"
OUT_BASE="${CLIPPER_OUT}/${ID}" OUT_BASE="${CLIPPER_OUT}/${ID}"
ANALYSIS="${OUT_BASE}/analysis" ANALYSIS="${OUT_BASE}/analysis"
LOGDIR="${CLIPPER_LOG}/${ID}" LOGDIR="${CLIPPER_LOG}/${ID}"
mkdir -p "$ANALYSIS" "$LOGDIR" mkdir -p "$ANALYSIS" "$LOGDIR"
exec > >(tee -a "${LOGDIR}/analyze.log") 2>&1 exec > >(tee -a "${LOGDIR}/analyze.log") 2>&1
echo "== Analyze $ID ==" echo "== Analyze $ID =="
# 1) Szenenwechsel echo "[FFMPEG] Szenewechselanalyse läuft..."
echo "[FFMPEG] Szenewechselanalyse läuft..." ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \ -vf "scale=-2:360,select=gt(scene\,0.30),showinfo" -an -f null - \
-vf "scale=-2:360,select=gt(scene\,0.30),showinfo" -an -f null - \ 2> "${LOGDIR}/sceneinfo.log"
2> "${LOGDIR}/sceneinfo.log"
# 2) Audio-Statistik echo "[FFMPEG] Audiostatistik läuft..."
echo "[FFMPEG] Audiostatistik läuft..." ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \
ffmpeg -hide_banner -loglevel error -i "${VOD_IN_MP4}" \ -vn -ac 1 -ar 16000 \
-vn -ac 1 -ar 16000 \ -af "astats=metadata=1:reset=2,ametadata=print:key=lavfi.astats.Overall.RMS_level" \
-af "astats=metadata=1:reset=2,ametadata=print:key=lavfi.astats.Overall.RMS_level" \ -f null - \
-f null - \ 2> "${LOGDIR}/astats.log" || true
2> "${LOGDIR}/astats.log" || true
# 3) Logs → candidates.json ANALYSIS="$ANALYSIS" LOGDIR="$LOGDIR" python3 - <<'PY'
ANALYSIS="$ANALYSIS" LOGDIR="$LOGDIR" python3 - <<'PY' import os, re, json, sys
import os, re, json, sys from datetime import datetime
from datetime import datetime
def log(msg): def log(msg):
timestamp = datetime.now().strftime("%F %T") timestamp = datetime.now().strftime("%F %T")
print(f"[PY] [{timestamp}] {msg}") print(f"[PY] [{timestamp}] {msg}")
out = os.environ["ANALYSIS"] out = os.environ["ANALYSIS"]
logdir = os.environ["LOGDIR"] logdir = os.environ["LOGDIR"]
scene_ts = [] scene_ts = []
log("Lese sceneinfo.log...") log("Lese sceneinfo.log...")
try: try:
with open(os.path.join(logdir, "sceneinfo.log"), errors="ignore") as f: with open(os.path.join(logdir, "sceneinfo.log"), errors="ignore") as f:
for line in f: for line in f:
m = re.search(r"pts_time:([0-9]+(?:\.[0-9]+)?)", line) m = re.search(r"pts_time:([0-9]+(?:\.[0-9]+)?)", line)
if m: if m:
scene_ts.append(float(m.group(1))) scene_ts.append(float(m.group(1)))
except Exception as e: except Exception as e:
log(f"Fehler beim Lesen von sceneinfo.log: {e}") log(f"Fehler beim Lesen von sceneinfo.log: {e}")
sys.exit(1) sys.exit(1)
log(f"{len(scene_ts)} Szenenwechsel gefunden.") log(f"{len(scene_ts)} Szenenwechsel gefunden.")
has_audio = False has_audio = False
ap = os.path.join(logdir, "astats.log") ap = os.path.join(logdir, "astats.log")
if os.path.exists(ap): if os.path.exists(ap):
log("Prüfe astats.log auf Audiodaten...") log("Prüfe astats.log auf Audiodaten...")
with open(ap, errors="ignore") as f: with open(ap, errors="ignore") as f:
has_audio = "RMS_level" in f.read() has_audio = "RMS_level" in f.read()
log(f"Audioanalyse: {'gefunden' if has_audio else 'nicht vorhanden'}") log(f"Audioanalyse: {'gefunden' if has_audio else 'nicht vorhanden'}")
cands = [{ cands = [{
"start": max(0.0, t - 2.0), "start": max(0.0, t - 2.0),
"end": t + 6.0, "end": t + 6.0,
"score": round(0.6 + (0.1 if has_audio else 0), 2), "score": round(0.6 + (0.1 if has_audio else 0), 2),
"tags": ["scene-cut"] + (["audio-peak"] if has_audio else []) "tags": ["scene-cut"] + (["audio-peak"] if has_audio else [])
} for t in scene_ts] } for t in scene_ts]
target = os.path.join(out, "candidates.json") target = os.path.join(out, "candidates.json")
try: try:
with open(target, "w", encoding="utf-8") as f: with open(target, "w", encoding="utf-8") as f:
json.dump(cands, f, ensure_ascii=False, indent=2) json.dump(cands, f, ensure_ascii=False, indent=2)
log(f"{len(cands)} Kandidaten gespeichert → {target}") log(f"{len(cands)} Kandidaten gespeichert → {target}")
except Exception as e: except Exception as e:
log(f"Fehler beim Schreiben von candidates.json: {e}") log(f"Fehler beim Schreiben von candidates.json: {e}")
sys.exit(2) sys.exit(2)
PY PY
echo "== Done $ID ==" echo "== Done $ID =="
``` ```
### Ergebnis ### Ergebnis