Script to read tracks from corrupted/unfinalized DVD media

dvd-saver

#!/bin/bash

# Device to read from
device="/dev/sr0"

# Get the current date and time
current_date_time=$(date +"%Y%m%d_%H%M%S")

# Function to parse the track information
parse_tracks() {
    local track_number=""
    local start_addr=""
    local track_size=""

    while read -r line; do
        if [[ $line =~ ^READ\ TRACK\ INFORMATION\[\#([0-9]+)\]:$ ]]; then
            track_number=${BASH_REMATCH[1]}
        elif [[ $line =~ Track\ Start\ Address:\ +([0-9]+)\*2KB ]]; then
            start_addr=${BASH_REMATCH[1]}
        elif [[ $line =~ Track\ Size:\ +([0-9]+)\*2KB ]]; then
            track_size=${BASH_REMATCH[1]}
            tracks+=("$track_number $start_addr $track_size")
        fi
    done < <(dvd+rw-mediainfo "$device")
}

# Parse the tracks
tracks=()
parse_tracks
if [[ -z "$tracks" ]]; then
    exit
fi

# Display tracks to the user
echo "Available tracks:"
for i in "${!tracks[@]}"; do
    track_number=$(echo "${tracks[$i]}" | awk '{print $1}')
    track_size=$(echo "${tracks[$i]}" | awk '{print $3}')
    echo "Track $track_number: Size = $((track_size * 2)) KB"
done

# Ask the user to select a track
read -p "Enter the track number to extract: " selected_track

# Find the selected track's start address and size
for track in "${tracks[@]}"; do
    track_number=$(echo "$track" | awk '{print $1}')
    if [[ $track_number -eq $selected_track ]]; then
        start_addr=$(echo "$track" | awk '{print $2}')
        track_size=$(echo "$track" | awk '{print $3}')
        break
    fi
done

# Generate the output filename using the current date and time plus track number
output_file="$HOME/Videos/${current_date_time}_track${selected_track}.vob"

# Final command to save track to file
dd bs=2048 skip="$start_addr" count="$track_size" if="$device" of="$output_file" status=progress