Erpropte relativ zuverlässige Version für Blurays
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#!/bin/bash
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# Install dependencies:
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# sudo dnf install ffmpeg mkvtoolnix jq
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# tesseract tesseract-langpack-eng tesseract-langpack-deu
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# Konfiguration
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INPUT_DIR="$1" # Verzeichnis mit den MKV-Dateien
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OUTPUT_DIR="$2" # Verzeichnis für die komprimierten Dateien
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RF_VALUE=20 # Qualität (niedriger = bessere Qualität)
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AAC_BITRATE_DEFAULT="192k" # Standard-Bitrate für Stereo AAC-Tonspuren
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echo "Eingabeverzeichnis: $INPUT_DIR"
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echo "Ausgabeverzeichnis: $OUTPUT_DIR"
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audio_file=$(mktemp)
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map_file=$(mktemp)
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crop_file=$(mktemp)
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mkdir -p "$OUTPUT_DIR"
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# Schleife über alle MKV-Dateien
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for file in "$INPUT_DIR"/*.mkv; do
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# Dateiname ohne Verzeichnis und Erweiterung
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filename=$(basename -- "$file")
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name="${filename%.*}"
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echo "Verarbeite Datei: $filename"
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#JSON-Daten extrahieren
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JSON=$(mkvmerge -J "$file")
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(
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for lang in "ger" "eng"; do
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# Spur-IDs extrahieren
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SPUR_IDS=$(echo "$JSON" | jq -r \
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--arg lang "$lang" \
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'.tracks[] | select(.type == "subtitles" and .codec == "HDMV PGS" and .properties.language == $lang) | .id')
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TEMP_DIR=$(mktemp -d) # Temporäres Verzeichnis für die Dateigrößenanalyse
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declare -A FILE_SIZES # Array für die Zuordnung von Spur-ID zu Dateigröße
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# Untertitel extrahieren und Dateigrößen ermitteln
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for ID in $SPUR_IDS; do
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OUTPUT_FILE="$TEMP_DIR/$lang.$ID.pgs"
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echo "Extrahiere Untertitel (Sprache: $lang) - Spur-ID: $ID"
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mkvextract tracks "$file" "$ID:$OUTPUT_FILE"
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if [[ -f "$OUTPUT_FILE" ]]; then
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FILE_SIZE=$(stat -c%s "$OUTPUT_FILE") # Größe der Datei in Bytes
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FILE_SIZES["$ID"]=$FILE_SIZE
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else
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echo "Fehler: Die Datei $OUTPUT_FILE wurde nicht extrahiert!"
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fi
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done
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# Sortiere Spur-IDs nach Dateigröße (aufsteigend)
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SORTED_IDS=$(for id in "${!FILE_SIZES[@]}"; do echo "$id ${FILE_SIZES[$id]}"; done | sort -k2 -n | awk '{print $1}')
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INDEX=0
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for ID in $SORTED_IDS; do
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OUTPUT_FILE="$OUTPUT_DIR/${filename%.*}.$lang"
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# Benennung basierend auf der Indexposition nach der Sortierung
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if [ $INDEX -eq 0 ]; then
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# Kleinste Datei → "forced"
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OUTPUT_FILE="$OUTPUT_FILE.forced.pgs"
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elif [ $INDEX -eq $((${#SORTED_IDS[@]} - 1)) ]; then
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# Größte Datei → "hearing_impaired" (optional)
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OUTPUT_FILE="$OUTPUT_FILE.hi.pgs"
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else
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# Übrige Dateien → "regular"
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OUTPUT_FILE="$OUTPUT_FILE.pgs"
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fi
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# Überprüfen, ob die Datei existiert und umbenennen
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if [[ -f "$TEMP_DIR/$lang.$ID.pgs" ]]; then
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mv "$TEMP_DIR/$lang.$ID.pgs" "$OUTPUT_FILE"
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echo "Benenne Spur-ID $ID als $OUTPUT_FILE"
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else
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echo "Fehler: Die Datei für Spur-ID $ID existiert nicht!"
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fi
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INDEX=$((INDEX + 1))
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done
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# Temporäres Verzeichnis entfernen
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rm -r "$TEMP_DIR"
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done
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) &
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(
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# Audio-Streams verarbeiten
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audio_options=""
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map_options=""
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audio_index=0 # Zählt die AAC-Audiospuren
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# Liste für Tonspuren pro Sprache
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declare -A audio_tracks
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# Ausgabe der gesamten ffmpeg-Informationen über Audio-Streams
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echo "Extrahiere Audio-Streams für $filename:"
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audio_info=$(ffmpeg -analyzeduration 200000000 -probesize 100000000 -i "$file" 2>&1 | grep "Audio")
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# Analysiere die Track-Informationen
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while IFS= read -r track_info; do
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echo "Track info: $track_info"
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index=$(echo "$track_info" | grep -oP '(?<=Stream #0:)\d+')
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codec=$(echo "$track_info" | grep -oP '(?<=Audio: )[^ ,]+')
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lang=$(echo "$track_info" | awk -F'[()]' '{print $2}')
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bitrate=$(echo "$track_info" | grep -oP '\d{3,4} kb/s' | grep -oP '\d+' || echo "0")
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channels=$(echo "$track_info" | grep -oP '\d+\.\d+')
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channel_layout=$(echo "$track_info" | grep -oP '\d+\.\d+\(.*?\)' | sed 's/^[^(]*//;s/[()]//g')
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echo "Index: $index, Codec: $codec, Sprache: $lang, Bitrate: ${bitrate}kbps, Kanäle: $channels, Layout: $channel_layout"
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# Nur relevante Sprachen verarbeiten
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if [[ "$lang" == "deu" || "$lang" == "eng" ]]; then
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# High-Resolution Audio (z.B. DTS-HD MA oder TrueHD)
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if [[ "$codec" == "dts" || "$codec" == "truehd" ]]; then
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echo "DTS oder TrueHD gefunden, extrahiere Audiospur"
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mkvextract "$file" tracks $index:"$OUTPUT_DIR/${name}.${lang}.mka"
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# Füge die AAC-Spur für die MKV-Datei hinzu (192kbps Stereo)
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audio_options+=" -c:a:$audio_index aac -b:a:$audio_index 192k -ac:a:$audio_index 2 -metadata:s:a:$audio_index language=\"$lang\" -metadata:s:a:$audio_index title=\"Stereo\""
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map_options+=" -map 0:$index"
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audio_index=$((audio_index + 1))
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else
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# Speichere alle relevanten Spuren zur späteren Filterung
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audio_tracks["$lang"]+="$index:$bitrate:$codec:$channels:$channel_layout "
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fi
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fi
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done <<< "$audio_info"
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# Filtere die Spuren mit der höchsten Bitrate pro Sprache
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for lang in "${!audio_tracks[@]}"; do
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best_track=$(echo "${audio_tracks[$lang]}" | tr ' ' '\n' | sort -t':' -k2 -nr | head -n 1)
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best_index=$(echo "$best_track" | cut -d':' -f1)
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best_bitrate=$(echo "$best_track" | cut -d':' -f2)
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best_codec=$(echo "$best_track" | cut -d':' -f3)
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best_channels=$(echo "$best_track" | cut -d':' -f4)
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best_layout=$(echo "$best_track" | cut -d':' -f5)
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# Fallback-Bitrate auf 192kbps, wenn keine Bitrate ermittelt werden konnte
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if [[ "$best_bitrate" == "0" ]]; then
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best_bitrate="192"
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echo "Keine Bitrate gefunden, Fallback auf 192kbps"
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fi
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# Kanal-Layout setzen
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if [[ "$best_layout" == "side" || "$best_channels" == "6.0" ]]; then
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title="Surround 5.1"
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best_layout="5.1" # Ersetze "side" durch "5.1"
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else
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title="Stereo"
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best_layout="stereo" # Für alles andere Stereo als Fallback
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fi
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echo "Verwende beste Spur für $lang: Index $best_index, Bitrate ${best_bitrate}kbps, Codec $best_codec, Kanäle: $best_channels, Layout: $best_layout"
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audio_options+=" -c:a:$audio_index aac -b:a:$audio_index ${best_bitrate}k -metadata:s:a:$audio_index language=\"$lang\" -metadata:s:a:$audio_index bitrate=\"$bitrate\" -metadata:s:a:$audio_index title=\"$title\" -channel_layout:a:$audio_index \"$best_layout\""
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map_options+=" -map 0:$best_index"
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audio_index=$((audio_index + 1))
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done
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# Ausgabe der finalen Optionen für ffmpeg
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echo "Map-Optionen: $map_options"
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echo "Audio-Optionen: $audio_options"
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# Ergebnisse speichern
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echo "$audio_options" > "$audio_file"
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echo "$map_options" > "$map_file"
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) &
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(
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echo "Versuche schwarze Balken zu finden und zu entfernen"
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crop=$(ffmpeg -i "$file" -vf cropdetect -f null - 2>&1 | grep -oP "crop=\d+:\d+:\d+:\d+" | tail -1)
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crop_options=""
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# Überprüfen, ob Werte gefunden wurden
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if [ -n "$crop" ]; then
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echo "Gefundene Crop-Werte: $crop"
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# Anwenden der Crop-Werte
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crop_options=" -vf \"$crop\""
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else
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echo "Keine Crop-Werte gefunden!"
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fi
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echo "$crop_options" > "$crop_file"
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) &
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wait
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# Ergebnisse einlesen
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audio_options=$(cat "$audio_file")
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map_options=$(cat "$map_file")
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crop_options=$(cat "$crop_file")
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#debug="-b:v 5M -maxrate 6M -bufsize 10M -g 48 -bf 3"
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additional_options="-profile:v main -level 4.1 -preset slow $debug"
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ffmpeg_cmd="ffmpeg -loglevel warning -analyzeduration 200000000 -probesize 100000000 -i \"$file\"$crop_options -c:v h264_nvenc -cq $RF_VALUE $additional_options $map_options $audio_options -c:s copy -map 0:v -map_metadata -1 \"$OUTPUT_DIR/${name}.mkv\""
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echo "Führe folgenden Befehl aus: $ffmpeg_cmd"
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eval $ffmpeg_cmd
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echo "Komprimierte Datei erstellt: $OUTPUT_DIR/${name}.mkv"
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echo ""
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done 2>&1 | tee convert.log
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# Temporäre Dateien aufräumen
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rm "$audio_file" "$map_file" "$crop_file"
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